51532992 has 84 divisors (see below), whose sum is σ = 168824656. Its totient is φ = 14722560.

The previous prime is 51532979. The next prime is 51533003. The reversal of 51532992 is 29923515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

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, 2359 + ... + 10422.

Almost surely, 2^51532992 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 51532992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84412328).

51532992 is an abundant number, since it is smaller than the sum of its proper divisors (117291664).

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

51532992 is a wasteful number, since it uses less digits than its factorization.

51532992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806 (or 12793 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 51532992 is about 7178.6483407394. The cubic root of 51532992 is about 372.1303740045.

The spelling of 51532992 in words is "fifty-one million, five hundred thirty-two thousand, nine hundred ninety-two".