51792740 has 24 divisors (see below), whose sum is σ = 109400760. Its totient is φ = 20595968.

The previous prime is 51792739. The next prime is 51792743. The reversal of 51792740 is 4729715.

It can be written as a sum of positive squares in 4 ways, for example, as 1779556 + 50013184 = 1334^2 + 7072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51792740.

It is not an unprimeable number, because it can be changed into a prime (51792743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025 + ... + 10944.

It is an arithmetic number, because the mean of its divisors is an integer number (4558365).

Almost surely, 2^51792740 is an apocalyptic number.

It is an amenable number.

51792740 is an abundant number, since it is smaller than the sum of its proper divisors (57608020).

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

51792740 is a wasteful number, since it uses less digits than its factorization.

51792740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151 (or 15149 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 51792740 is about 7196.7173072172. The cubic root of 51792740 is about 372.7545577704.

The spelling of 51792740 in words is "fifty-one million, seven hundred ninety-two thousand, seven hundred forty".