51431360 has 28 divisors (see below), whose sum is σ = 122471688. Its totient is φ = 20572416.

The previous prime is 51431329. The next prime is 51431363. The reversal of 51431360 is 6313415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51431363) 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, 80042 + ... + 80681.

Almost surely, 2^51431360 is an apocalyptic number.

It is an amenable number.

51431360 is an abundant number, since it is smaller than the sum of its proper divisors (71040328).

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

51431360 is a wasteful number, since it uses less digits than its factorization.

51431360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160740 (or 160730 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51431360 is about 7171.5660772247. The cubic root of 51431360 is about 371.8855777892.

Adding to 51431360 its reverse (6313415), we get a palindrome (57744775).

The spelling of 51431360 in words is "fifty-one million, four hundred thirty-one thousand, three hundred sixty".