51804808 has 32 divisors (see below), whose sum is σ = 106272000. Its totient is φ = 23479360.

The previous prime is 51804787. The next prime is 51804821. The reversal of 51804808 is 80840815.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41538 + ... + 42766.

It is an arithmetic number, because the mean of its divisors is an integer number (3321000).

Almost surely, 2^51804808 is an apocalyptic number.

It is an amenable number.

51804808 is an abundant number, since it is smaller than the sum of its proper divisors (54467192).

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

51804808 is a wasteful number, since it uses less digits than its factorization.

51804808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 51804808 is about 7197.5556962069. Note that the first 3 decimals coincide. The cubic root of 51804808 is about 372.7835068256.

The spelling of 51804808 in words is "fifty-one million, eight hundred four thousand, eight hundred eight".