51255156 has 24 divisors (see below), whose sum is σ = 121038624. Its totient is φ = 16878880.

The previous prime is 51255143. The next prime is 51255161. The reversal of 51255156 is 65155215.

51255156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 24735 + ... + 26726.

It is an arithmetic number, because the mean of its divisors is an integer number (5043276).

Almost surely, 2^51255156 is an apocalyptic number.

It is an amenable number.

51255156 is an abundant number, since it is smaller than the sum of its proper divisors (69783468).

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

51255156 is a wasteful number, since it uses less digits than its factorization.

51255156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51551 (or 51549 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 51255156 is about 7159.2706332419. The cubic root of 51255156 is about 371.4603981463.

The spelling of 51255156 in words is "fifty-one million, two hundred fifty-five thousand, one hundred fifty-six".