51031937 has 4 divisors (see below), whose sum is σ = 55671216. Its totient is φ = 46392660.

The previous prime is 51031931. The next prime is 51031949. The reversal of 51031937 is 73913015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51031937 - 2⁸ = 51031681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51031931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2319623 + ... + 2319644.

It is an arithmetic number, because the mean of its divisors is an integer number (13917804).

Almost surely, 2^51031937 is an apocalyptic number.

It is an amenable number.

51031937 is a deficient number, since it is larger than the sum of its proper divisors (4639279).

51031937 is a wasteful number, since it uses less digits than its factorization.

51031937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4639278.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 51031937 is about 7143.6641158442. The cubic root of 51031937 is about 370.9203700037.

The spelling of 51031937 in words is "fifty-one million, thirty-one thousand, nine hundred thirty-seven".