Number of the day: 171274

Properties of the number 171274:

171274 = 2 × 29 × 2953 is a sphenic number and squarefree.
171274 has 3 distinct prime factors, 8 divisors, 11 antidivisors and 82656 totatives.
171274 has a semiprime digit sum 22 in base 10.
Reversing the decimal digits of 171274 results in a semiprime.
171274 is the difference of 2 positive pentagonal numbers in 2 ways.
171274 = 243² + 335² = 75² + 407² is the sum of 2 positive squares in 2 ways.
171274 = 72² + 83² + 399² is the sum of 3 positive squares.
171274² = 118120² + 124026² = 61050² + 160024² = 53176² + 162810² = 73776² + 154570² is the sum of 2 positive squares in 4 ways.
171274² is the sum of 3 positive squares.
171274 is a proper divisor of 1277⁴¹ - 1.
171274 is palindromic in (at least) base -61.
171274 in base 13 = 5cc5c and consists of only the digits '5' and 'c'.
171274 in base 60 = lYY and consists of only the digits 'Y' and 'l'.

The number 171274 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A185324: E.g.f. log(1/(2-tan(x)-sec(x)).