51000038 has 16 divisors (see below), whose sum is σ = 79915680. Its totient is φ = 24378816.

The previous prime is 50999999. The next prime is 51000041. The reversal of 51000038 is 83000015.

It is a Curzon number.

It is a congruent number.

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, 1706 + ... + 10242.

It is an arithmetic number, because the mean of its divisors is an integer number (4994730).

Almost surely, 2^51000038 is an apocalyptic number.

51000038 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51000038 is a deficient number, since it is larger than the sum of its proper divisors (28915642).

51000038 is a wasteful number, since it uses less digits than its factorization.

51000038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8671.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51000038 is about 7141.4310890745. The cubic root of 51000038 is about 370.8430690314.

The spelling of 51000038 in words is "fifty-one million, thirty-eight", and thus it is an aban number and an uban number.