51156156 has 12 divisors (see below), whose sum is σ = 119364392. Its totient is φ = 17052048.

The previous prime is 51156143. The next prime is 51156167. The reversal of 51156156 is 65165115.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2131495 + ... + 2131518.

Almost surely, 2^51156156 is an apocalyptic number.

It is an amenable number.

51156156 is an abundant number, since it is smaller than the sum of its proper divisors (68208236).

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

51156156 is a wasteful number, since it uses less digits than its factorization.

51156156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263020 (or 4263018 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 51156156 is about 7152.3531791991. The cubic root of 51156156 is about 371.2210838048.

The spelling of 51156156 in words is "fifty-one million, one hundred fifty-six thousand, one hundred fifty-six".