255961536 has 28 divisors (see below), whose sum is σ = 677232072. Its totient is φ = 85320448.

The previous prime is 255961493. The next prime is 255961543. The reversal of 255961536 is 635169552.

It is a super-2 number, since 2×255961536² = 131032615822958592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666375 + ... + 666758.

Almost surely, 2^255961536 is an apocalyptic number.

It is an amenable number.

255961536 is an abundant number, since it is smaller than the sum of its proper divisors (421270536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255961536 is a wasteful number, since it uses less digits than its factorization.

255961536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333148 (or 1333138 counting only the distinct ones).

The product of its digits is 243000, while the sum is 42.

The square root of 255961536 is about 15998.7979548465. The cubic root of 255961536 is about 634.9286182600.

The spelling of 255961536 in words is "two hundred fifty-five million, nine hundred sixty-one thousand, five hundred thirty-six".