87513256 has 32 divisors (see below), whose sum is σ = 170454240. Its totient is φ = 42090048.

The previous prime is 87513227. The next prime is 87513269. The reversal of 87513256 is 65231578.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21150 + ... + 24946.

It is an arithmetic number, because the mean of its divisors is an integer number (5326695).

Almost surely, 2^87513256 is an apocalyptic number.

87513256 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

87513256 is a deficient number, since it is larger than the sum of its proper divisors (82940984).

87513256 is a wasteful number, since it uses less digits than its factorization.

87513256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913 (or 3909 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 87513256 is about 9354.8520031051. The cubic root of 87513256 is about 443.9744188925.

The spelling of 87513256 in words is "eighty-seven million, five hundred thirteen thousand, two hundred fifty-six".