Number of the day: 75885

Properties of the number 75885:

75885 = 3 × 5 × 5059 is a sphenic number and squarefree.
75885 has 3 distinct prime factors, 8 divisors, 7 antidivisors and 40464 totatives.
75885 has a semiprime digit sum 33 in base 10.
Reversing the decimal digits of 75885 results in a sphenic number.
75885 = 37943² - 37942² = 12649² - 12646² = 7591² - 7586² = 2537² - 2522² is the difference of 2 nonnegative squares in 4 ways.
75885 is the difference of 2 positive pentagonal numbers in 2 ways.
75885 = 5² + 28² + 274² is the sum of 3 positive squares.
75885² = 45531² + 60708² is the sum of 2 positive squares in 1 way.
75885² is the sum of 3 positive squares.
75885 is a proper divisor of 1913¹² - 1.
75885 = '758' + '85' is the concatenation of 2 semiprime numbers.

The number 75885 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A137083: Numbers n such that n and the square of n use only the digits 2, 3, 5, 7 and 8.