51247204 has 12 divisors (see below), whose sum is σ = 90056428. Its totient is φ = 25516800.

The previous prime is 51247169. The next prime is 51247211. The reversal of 51247204 is 40274215.

51247204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 36578304 + 14668900 = 6048^2 + 3830^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25617 + ... + 27544.

Almost surely, 2^51247204 is an apocalyptic number.

It is an amenable number.

51247204 is a deficient number, since it is larger than the sum of its proper divisors (38809224).

51247204 is a wasteful number, since it uses less digits than its factorization.

51247204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53406 (or 53404 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 51247204 is about 7158.7152478640. The cubic root of 51247204 is about 371.4411870328.

The spelling of 51247204 in words is "fifty-one million, two hundred forty-seven thousand, two hundred four".