51664304 has 30 divisors (see below), whose sum is σ = 101510244. Its totient is φ = 25471680.

The previous prime is 51664273. The next prime is 51664331. The reversal of 51664304 is 40346615.

51664304 = 67² + 68² + ... + 537².

It is a happy number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 328994 + ... + 329150.

Almost surely, 2^51664304 is an apocalyptic number.

It is an amenable number.

51664304 is a deficient number, since it is larger than the sum of its proper divisors (49845940).

51664304 is a wasteful number, since it uses less digits than its factorization.

51664304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 51664304 is about 7187.7885333390. The cubic root of 51664304 is about 372.4461829373.

The spelling of 51664304 in words is "fifty-one million, six hundred sixty-four thousand, three hundred four".