51711432 has 16 divisors (see below), whose sum is σ = 129278640. Its totient is φ = 17237136.

The previous prime is 51711431. The next prime is 51711461. The reversal of 51711432 is 23411715.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2154643 = 51711432 / (5 + 1 + 7 + 1 + 1 + 4 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (51711431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077298 + ... + 1077345.

It is an arithmetic number, because the mean of its divisors is an integer number (8079915).

Almost surely, 2^51711432 is an apocalyptic number.

It is an amenable number.

51711432 is an abundant number, since it is smaller than the sum of its proper divisors (77567208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51711432 is a wasteful number, since it uses less digits than its factorization.

51711432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154652 (or 2154648 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 51711432 is about 7191.0661240181. The cubic root of 51711432 is about 372.5593965612.

The spelling of 51711432 in words is "fifty-one million, seven hundred eleven thousand, four hundred thirty-two".