51938860 has 12 divisors (see below), whose sum is σ = 109071648. Its totient is φ = 20775536.

The previous prime is 51938849. The next prime is 51938881. The reversal of 51938860 is 6883915.

It is a happy number.

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, 1298452 + ... + 1298491.

It is an arithmetic number, because the mean of its divisors is an integer number (9089304).

Almost surely, 2^51938860 is an apocalyptic number.

It is an amenable number.

51938860 is an abundant number, since it is smaller than the sum of its proper divisors (57132788).

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

51938860 is a wasteful number, since it uses less digits than its factorization.

51938860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596952 (or 2596950 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 51938860 is about 7206.8620078367. The cubic root of 51938860 is about 373.1047725858.

The spelling of 51938860 in words is "fifty-one million, nine hundred thirty-eight thousand, eight hundred sixty".