51037664 has 12 divisors (see below), whose sum is σ = 100480464. Its totient is φ = 25518816.

The previous prime is 51037631. The next prime is 51037669. The reversal of 51037664 is 46673015.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1594927 = 51037664 / (5 + 1 + 0 + 3 + 7 + 6 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 51037664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51037669) 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 as a sum of consecutive naturals, namely, 797432 + ... + 797495.

It is an arithmetic number, because the mean of its divisors is an integer number (8373372).

Almost surely, 2^51037664 is an apocalyptic number.

It is an amenable number.

51037664 is a deficient number, since it is larger than the sum of its proper divisors (49442800).

51037664 is a wasteful number, since it uses less digits than its factorization.

51037664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594937 (or 1594929 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 51037664 is about 7144.0649493128. The cubic root of 51037664 is about 370.9342448543.

The spelling of 51037664 in words is "fifty-one million, thirty-seven thousand, six hundred sixty-four".