51538008 has 32 divisors (see below), whose sum is σ = 130772160. Its totient is φ = 16922400.

The previous prime is 51538001. The next prime is 51538021. The reversal of 51538008 is 80083515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51538001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14418 + ... + 17633.

It is an arithmetic number, because the mean of its divisors is an integer number (4086630).

Almost surely, 2^51538008 is an apocalyptic number.

It is an amenable number.

51538008 is an abundant number, since it is smaller than the sum of its proper divisors (79234152).

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

51538008 is a wasteful number, since it uses less digits than its factorization.

51538008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32127 (or 32123 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 51538008 is about 7178.9977016294. The cubic root of 51538008 is about 372.1424474699.

The spelling of 51538008 in words is "fifty-one million, five hundred thirty-eight thousand, eight".