51272856 has 48 divisors (see below), whose sum is σ = 142101960. Its totient is φ = 16692480.

The previous prime is 51272839. The next prime is 51272869. The reversal of 51272856 is 65827215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51272856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5185 + ... + 11376.

Almost surely, 2^51272856 is an apocalyptic number.

It is an amenable number.

51272856 is an abundant number, since it is smaller than the sum of its proper divisors (90829104).

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

51272856 is a wasteful number, since it uses less digits than its factorization.

51272856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16616 (or 16609 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 51272856 is about 7160.5066859825. The cubic root of 51272856 is about 371.5031521693.

The spelling of 51272856 in words is "fifty-one million, two hundred seventy-two thousand, eight hundred fifty-six".