2551856372 has 12 divisors (see below), whose sum is σ = 4809267876. Its totient is φ = 1177779840.

The previous prime is 2551856347. The next prime is 2551856387. The reversal of 2551856372 is 2736581552.

It can be written as a sum of positive squares in 2 ways, for example, as 1296288016 + 1255568356 = 36004^2 + 35434^2 .

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, 24537029 + ... + 24537132.

It is an arithmetic number, because the mean of its divisors is an integer number (400772323).

Almost surely, 2^2551856372 is an apocalyptic number.

It is an amenable number.

2551856372 is a deficient number, since it is larger than the sum of its proper divisors (2257411504).

2551856372 is a wasteful number, since it uses less digits than its factorization.

2551856372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49074178 (or 49074176 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 2551856372 is about 50515.9021695149. The cubic root of 2551856372 is about 1366.5286531528.

The spelling of 2551856372 in words is "two billion, five hundred fifty-one million, eight hundred fifty-six thousand, three hundred seventy-two".