515956 has 12 divisors (see below), whose sum is σ = 1031968. Its totient is φ = 221112.

The previous prime is 515951. The next prime is 515969. The reversal of 515956 is 659515.

It is a happy number.

515956 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515951) by changing a digit.

515956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9186 + ... + 9241.

2⁵¹⁵⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

515956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

515956 is a wasteful number, since it uses less digits than its factorization.

515956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18438 (or 18436 counting only the distinct ones).

The product of its digits is 6750, while the sum is 31.

The square root of 515956 is about 718.3007726572. The cubic root of 515956 is about 80.2055132683.

The spelling of 515956 in words is "five hundred fifteen thousand, nine hundred fifty-six".