51572256 has 48 divisors (see below), whose sum is σ = 141269184. Its totient is φ = 16442624.

The previous prime is 51572249. The next prime is 51572273. The reversal of 51572256 is 65227515.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9471 + ... + 13886.

It is an arithmetic number, because the mean of its divisors is an integer number (2943108).

Almost surely, 2^51572256 is an apocalyptic number.

It is an amenable number.

51572256 is an abundant number, since it is smaller than the sum of its proper divisors (89696928).

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

51572256 is a wasteful number, since it uses less digits than its factorization.

51572256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23393 (or 23385 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 51572256 is about 7181.3825966871. The cubic root of 51572256 is about 372.2248611613.

It can be divided in two parts, 515 and 72256, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 51572256 in words is "fifty-one million, five hundred seventy-two thousand, two hundred fifty-six".