51425538 has 8 divisors (see below), whose sum is σ = 102851088. Its totient is φ = 17141844.

The previous prime is 51425489. The next prime is 51425551. The reversal of 51425538 is 83552415.

It is a sphenic number, since it is the product of 3 distinct primes.

51425538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 51425499 and 51425508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4285456 + ... + 4285467.

It is an arithmetic number, because the mean of its divisors is an integer number (12856386).

Almost surely, 2^51425538 is an apocalyptic number.

51425538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51425538 is a wasteful number, since it uses less digits than its factorization.

51425538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570928.

The product of its digits is 24000, while the sum is 33.

The square root of 51425538 is about 7171.1601571852. The cubic root of 51425538 is about 371.8715448494.

The spelling of 51425538 in words is "fifty-one million, four hundred twenty-five thousand, five hundred thirty-eight".