51711723 has 32 divisors (see below), whose sum is σ = 87897600. Its totient is φ = 29433888.

The previous prime is 51711719. The next prime is 51711731. The reversal of 51711723 is 32711715.

It is a happy number.

It is not a de Polignac number, because 51711723 - 2² = 51711719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51711743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78865 + ... + 79517.

It is an arithmetic number, because the mean of its divisors is an integer number (2746800).

Almost surely, 2^51711723 is an apocalyptic number.

51711723 is a deficient number, since it is larger than the sum of its proper divisors (36185877).

51711723 is a wasteful number, since it uses less digits than its factorization.

51711723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1082 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 51711723 is about 7191.0863574289. The cubic root of 51711723 is about 372.5600954047.

The spelling of 51711723 in words is "fifty-one million, seven hundred eleven thousand, seven hundred twenty-three".