51308604 has 36 divisors (see below), whose sum is σ = 131345760. Its totient is φ = 16885440.

The previous prime is 51308599. The next prime is 51308617. The reversal of 51308604 is 40680315.

51308604 is a `hidden beast` number, since 51 + 3 + 0 + 8 + 604 = 666.

51308604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 6177 + ... + 11864.

Almost surely, 2^51308604 is an apocalyptic number.

It is an amenable number.

51308604 is an abundant number, since it is smaller than the sum of its proper divisors (80037156).

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

51308604 is a wasteful number, since it uses less digits than its factorization.

51308604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18130 (or 18125 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51308604 is about 7163.0024431100. The cubic root of 51308604 is about 371.5894708083.

Adding to 51308604 its reverse (40680315), we get a palindrome (91988919).

The spelling of 51308604 in words is "fifty-one million, three hundred eight thousand, six hundred four".