51951844 has 12 divisors (see below), whose sum is σ = 103903744. Its totient is φ = 22265064.

The previous prime is 51951829. The next prime is 51951853. The reversal of 51951844 is 44815915.

51951844 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 927684 + ... + 927739.

Almost surely, 2^51951844 is an apocalyptic number.

It is an amenable number.

51951844 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.

51951844 is a wasteful number, since it uses less digits than its factorization.

51951844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855434 (or 1855432 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 51951844 is about 7207.7627596918. The cubic root of 51951844 is about 373.1358603477.

The spelling of 51951844 in words is "fifty-one million, nine hundred fifty-one thousand, eight hundred forty-four".