51642474 has 16 divisors (see below), whose sum is σ = 111230112. Its totient is φ = 15889968.

The previous prime is 51642457. The next prime is 51642529. The reversal of 51642474 is 47424615.

It is a Curzon number.

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, 330964 + ... + 331119.

It is an arithmetic number, because the mean of its divisors is an integer number (6951882).

Almost surely, 2^51642474 is an apocalyptic number.

51642474 is an abundant number, since it is smaller than the sum of its proper divisors (59587638).

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

51642474 is a wasteful number, since it uses less digits than its factorization.

51642474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662101.

The product of its digits is 26880, while the sum is 33.

The square root of 51642474 is about 7186.2698251596. The cubic root of 51642474 is about 372.3937183085.

The spelling of 51642474 in words is "fifty-one million, six hundred forty-two thousand, four hundred seventy-four".