Number of the day: 98881

Properties of the number 98881:

98881 is a cyclic number.
98881 = 61 × 1621 is semiprime and squarefree.
98881 has 2 distinct prime factors, 4 divisors, 7 antidivisors and 97200 totatives.
98881 has a semiprime digit sum 34 in base 10.
98881 has a Fibonacci digit sum 34 in base 10.
Reversing the decimal digits of 98881 results in an emirpimes.
98881 = 49441² - 49440² = 841² - 780² is the difference of 2 nonnegative squares in 2 ways.
98881 is the sum of 2 positive triangular numbers.
98881 is the difference of 2 positive pentagonal numbers in 2 ways.
98881 = 184² + 255² = 135² + 284² is the sum of 2 positive squares in 2 ways.
98881 = 36² + 121² + 288² is the sum of 3 positive squares.
98881² = 62431² + 76680² = 17831² + 97260² = 31169² + 93840² = 47580² + 86681² is the sum of 2 positive squares in 4 ways.
98881² is the sum of 3 positive squares.
98881 is a proper divisor of 1489¹⁵ - 1.
98881 = '9' + '8881' is the concatenation of 2 semiprime numbers.
98881 is an emirpimes in (at least) the following bases: 2, 3, 10, 14, 17, 18, 21, 22, 24, 27, 29, 36, 39, 41, 45, 46, 47, 49, 55, 56, 59, 63, 68, 71, 72, 74, 83, 87, 91, 92, 93, 97, 98, and 100.
98881 is palindromic in (at least) base -53.
98881 in base 52 = aTT and consists of only the digits 'T' and 'a'.

The number 98881 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A020286: Strong pseudoprimes to base 60.
A020315: Strong pseudoprimes to base 89.
A067375: Integers expressible as the sum of (at least two) consecutive primes in at least 5 ways.