51247304 has 8 divisors (see below), whose sum is σ = 96088710. Its totient is φ = 25623648.

The previous prime is 51247297. The next prime is 51247327. The reversal of 51247304 is 40374215.

51247304 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 only one way, i.e., 28111204 + 23136100 = 5302^2 + 4810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 3202949 + ... + 3202964.

Almost surely, 2^51247304 is an apocalyptic number.

It is an amenable number.

51247304 is a deficient number, since it is larger than the sum of its proper divisors (44841406).

51247304 is a wasteful number, since it uses less digits than its factorization.

51247304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405919 (or 6405915 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 51247304 is about 7158.7222323540. The cubic root of 51247304 is about 371.4414286335.

The spelling of 51247304 in words is "fifty-one million, two hundred forty-seven thousand, three hundred four".