51428616 has 32 divisors (see below), whose sum is σ = 129292800. Its totient is φ = 17046720.

The previous prime is 51428609. The next prime is 51428627. The reversal of 51428616 is 61682415.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (4040400).

Almost surely, 2^51428616 is an apocalyptic number.

It is an amenable number.

51428616 is an abundant number, since it is smaller than the sum of its proper divisors (77864184).

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

51428616 is a wasteful number, since it uses less digits than its factorization.

51428616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12029 (or 12025 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 51428616 is about 7171.3747636001. The cubic root of 51428616 is about 371.8789639763.

The spelling of 51428616 in words is "fifty-one million, four hundred twenty-eight thousand, six hundred sixteen".