51492732 has 12 divisors (see below), whose sum is σ = 120149736. Its totient is φ = 17164240.

The previous prime is 51492731. The next prime is 51492737. The reversal of 51492732 is 23729415.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 51492693 and 51492702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145519 + ... + 2145542.

It is an arithmetic number, because the mean of its divisors is an integer number (10012478).

Almost surely, 2^51492732 is an apocalyptic number.

It is an amenable number.

51492732 is an abundant number, since it is smaller than the sum of its proper divisors (68657004).

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

51492732 is a wasteful number, since it uses less digits than its factorization.

51492732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291068 (or 4291066 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 51492732 is about 7175.8436437815. The cubic root of 51492732 is about 372.0334401665.

The spelling of 51492732 in words is "fifty-one million, four hundred ninety-two thousand, seven hundred thirty-two".