51563604 has 24 divisors (see below), whose sum is σ = 120445920. Its totient is φ = 17169184.

The previous prime is 51563597. The next prime is 51563627. The reversal of 51563604 is 40636515.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 13402 + ... + 16814.

It is an arithmetic number, because the mean of its divisors is an integer number (5018580).

Almost surely, 2^51563604 is an apocalyptic number.

It is an amenable number.

51563604 is an abundant number, since it is smaller than the sum of its proper divisors (68882316).

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

51563604 is a wasteful number, since it uses less digits than its factorization.

51563604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679 (or 4677 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51563604 is about 7180.7801804539. The cubic root of 51563604 is about 372.2040446095.

The spelling of 51563604 in words is "fifty-one million, five hundred sixty-three thousand, six hundred four".