51812975 has 12 divisors (see below), whose sum is σ = 64408080. Its totient is φ = 41347200.

The previous prime is 51812963. The next prime is 51812993. The reversal of 51812975 is 57921815.

It is a de Polignac number, because none of the positive numbers 2^k-51812975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8615 + ... + 13335.

It is an arithmetic number, because the mean of its divisors is an integer number (5367340).

Almost surely, 2^51812975 is an apocalyptic number.

51812975 is a deficient number, since it is larger than the sum of its proper divisors (12595105).

51812975 is a wasteful number, since it uses less digits than its factorization.

51812975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170 (or 5165 counting only the distinct ones).

The product of its digits is 25200, while the sum is 38.

The square root of 51812975 is about 7198.1230192322. The cubic root of 51812975 is about 372.8030955024.

The spelling of 51812975 in words is "fifty-one million, eight hundred twelve thousand, nine hundred seventy-five".