51864932 has 36 divisors (see below), whose sum is σ = 107097984. Its totient is φ = 21908880.

The previous prime is 51864893. The next prime is 51864941. The reversal of 51864932 is 23946815.

It is a happy number.

51864932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12053 + ... + 15779.

It is an arithmetic number, because the mean of its divisors is an integer number (2974944).

Almost surely, 2^51864932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51864932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53548992).

51864932 is an abundant number, since it is smaller than the sum of its proper divisors (55233052).

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

51864932 is a wasteful number, since it uses less digits than its factorization.

51864932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3807 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 51864932 is about 7201.7311807648. The cubic root of 51864932 is about 372.9276669990.

The spelling of 51864932 in words is "fifty-one million, eight hundred sixty-four thousand, nine hundred thirty-two".