51426864 has 30 divisors (see below), whose sum is σ = 143924196. Its totient is φ = 17142240.

The previous prime is 51426847. The next prime is 51426871. The reversal of 51426864 is 46862415.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178422 + ... + 178709.

Almost surely, 2^51426864 is an apocalyptic number.

It is an amenable number.

51426864 is an abundant number, since it is smaller than the sum of its proper divisors (92497332).

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

51426864 is a wasteful number, since it uses less digits than its factorization.

51426864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357145 (or 357136 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 51426864 is about 7171.2526102488. The cubic root of 51426864 is about 371.8747410398.

The spelling of 51426864 in words is "fifty-one million, four hundred twenty-six thousand, eight hundred sixty-four".