51512044 has 12 divisors (see below), whose sum is σ = 91076104. Its totient is φ = 25490304.

The previous prime is 51512039. The next prime is 51512099. The reversal of 51512044 is 44021515.

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, 65994 + ... + 66769.

Almost surely, 2^51512044 is an apocalyptic number.

It is an amenable number.

51512044 is a deficient number, since it is larger than the sum of its proper divisors (39564060).

51512044 is a wasteful number, since it uses less digits than its factorization.

51512044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132864 (or 132862 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51512044 is about 7177.1891433903. The cubic root of 51512044 is about 372.0799438931.

Adding to 51512044 its reverse (44021515), we get a palindrome (95533559).

The spelling of 51512044 in words is "fifty-one million, five hundred twelve thousand, forty-four".