51937131 has 4 divisors (see below), whose sum is σ = 69249512. Its totient is φ = 34624752.

The previous prime is 51937073. The next prime is 51937147. The reversal of 51937131 is 13173915.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51937131 - 2⁷ = 51937003 is a prime.

It is a super-2 number, since 2×51937131² = 5394931153022322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51937181) 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, 8656186 + ... + 8656191.

It is an arithmetic number, because the mean of its divisors is an integer number (17312378).

Almost surely, 2^51937131 is an apocalyptic number.

51937131 is a deficient number, since it is larger than the sum of its proper divisors (17312381).

51937131 is a wasteful number, since it uses less digits than its factorization.

51937131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17312380.

The product of its digits is 2835, while the sum is 30.

The square root of 51937131 is about 7206.7420517180. The cubic root of 51937131 is about 373.1006324275.

The spelling of 51937131 in words is "fifty-one million, nine hundred thirty-seven thousand, one hundred thirty-one".