51030156 has 48 divisors (see below), whose sum is σ = 122540544. Its totient is φ = 16520256.

The previous prime is 51030137. The next prime is 51030179. The reversal of 51030156 is 65103015.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97311 + ... + 97833.

It is an arithmetic number, because the mean of its divisors is an integer number (2552928).

Almost surely, 2^51030156 is an apocalyptic number.

It is an amenable number.

51030156 is an abundant number, since it is smaller than the sum of its proper divisors (71510388).

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

51030156 is a wasteful number, since it uses less digits than its factorization.

51030156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 51030156 is about 7143.5394588397. The cubic root of 51030156 is about 370.9160549486.

The spelling of 51030156 in words is "fifty-one million, thirty thousand, one hundred fifty-six".