51245392 has 20 divisors (see below), whose sum is σ = 108314496. Its totient is φ = 23293280.

The previous prime is 51245377. The next prime is 51245393. The reversal of 51245392 is 29354215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245393) 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, 145408 + ... + 145759.

Almost surely, 2^51245392 is an apocalyptic number.

It is an amenable number.

51245392 is an abundant number, since it is smaller than the sum of its proper divisors (57069104).

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

51245392 is a wasteful number, since it uses less digits than its factorization.

51245392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291186 (or 291180 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 51245392 is about 7158.5886877233. The cubic root of 51245392 is about 371.4368091720.

The spelling of 51245392 in words is "fifty-one million, two hundred forty-five thousand, three hundred ninety-two".