51711137 has 4 divisors (see below), whose sum is σ = 51867696. Its totient is φ = 51554580.

The previous prime is 51711133. The next prime is 51711151. The reversal of 51711137 is 73111715.

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 51711137 - 2² = 51711133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51711133) 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, 77783 + ... + 78444.

It is an arithmetic number, because the mean of its divisors is an integer number (12966924).

Almost surely, 2^51711137 is an apocalyptic number.

It is an amenable number.

51711137 is a deficient number, since it is larger than the sum of its proper divisors (156559).

51711137 is a wasteful number, since it uses less digits than its factorization.

51711137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156558.

The product of its digits is 735, while the sum is 26.

The square root of 51711137 is about 7191.0456124266. The cubic root of 51711137 is about 372.5586881091.

The spelling of 51711137 in words is "fifty-one million, seven hundred eleven thousand, one hundred thirty-seven".