51492320 has 96 divisors (see below), whose sum is σ = 140597856. Its totient is φ = 17612800.

The previous prime is 51492293. The next prime is 51492341. The reversal of 51492320 is 2329415.

It is a self number, because there is not a number n which added to its sum of digits gives 51492320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29060 + ... + 30780.

It is an arithmetic number, because the mean of its divisors is an integer number (1464561).

Almost surely, 2^51492320 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 51492320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70298928).

51492320 is an abundant number, since it is smaller than the sum of its proper divisors (89105536).

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

51492320 is a wasteful number, since it uses less digits than its factorization.

51492320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51492320 is about 7175.8149362982. The cubic root of 51492320 is about 372.0324479346.

The spelling of 51492320 in words is "fifty-one million, four hundred ninety-two thousand, three hundred twenty".