51822864 has 60 divisors (see below), whose sum is σ = 151347456. Its totient is φ = 16522176.

The previous prime is 51822857. The next prime is 51822877. The reversal of 51822864 is 46822815.

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 11 ways as a sum of consecutive naturals, for example, 4512 + ... + 11135.

Almost surely, 2^51822864 is an apocalyptic number.

It is an amenable number.

51822864 is an abundant number, since it is smaller than the sum of its proper divisors (99524592).

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

51822864 is a wasteful number, since it uses less digits than its factorization.

51822864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15684 (or 15675 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 51822864 is about 7198.8099016435. The cubic root of 51822864 is about 372.8268116680.

The spelling of 51822864 in words is "fifty-one million, eight hundred twenty-two thousand, eight hundred sixty-four".