51516392 has 32 divisors (see below), whose sum is σ = 103696200. Its totient is φ = 23906304.

The previous prime is 51516359. The next prime is 51516397. The reversal of 51516392 is 29361515.

It can be written as a sum of positive squares in 4 ways, for example, as 51351556 + 164836 = 7166^2 + 406^2 .

It is not an unprimeable number, because it can be changed into a prime (51516397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7334 + ... + 12522.

Almost surely, 2^51516392 is an apocalyptic number.

It is an amenable number.

51516392 is an abundant number, since it is smaller than the sum of its proper divisors (52179808).

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

51516392 is a wasteful number, since it uses less digits than its factorization.

51516392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285 (or 5281 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 51516392 is about 7177.4920410962. The cubic root of 51516392 is about 372.0904123710.

The spelling of 51516392 in words is "fifty-one million, five hundred sixteen thousand, three hundred ninety-two".