51678572 has 48 divisors (see below), whose sum is σ = 106323840. Its totient is φ = 21715200.

The previous prime is 51678547. The next prime is 51678617. The reversal of 51678572 is 27587615.

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, 43547 + ... + 44717.

It is an arithmetic number, because the mean of its divisors is an integer number (2215080).

Almost surely, 2^51678572 is an apocalyptic number.

It is an amenable number.

51678572 is an abundant number, since it is smaller than the sum of its proper divisors (54645268).

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

51678572 is a wasteful number, since it uses less digits than its factorization.

51678572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1260 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 51678572 is about 7188.7809815017. The cubic root of 51678572 is about 372.4804656213.

The spelling of 51678572 in words is "fifty-one million, six hundred seventy-eight thousand, five hundred seventy-two".