51731782 has 16 divisors (see below), whose sum is σ = 83512512. Its totient is φ = 23944320.

The previous prime is 51731767. The next prime is 51731821. The reversal of 51731782 is 28713715.

51731782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10398 + ... + 14545.

It is an arithmetic number, because the mean of its divisors is an integer number (5219532).

Almost surely, 2^51731782 is an apocalyptic number.

51731782 is a deficient number, since it is larger than the sum of its proper divisors (31780730).

51731782 is a wasteful number, since it uses less digits than its factorization.

51731782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25023.

The product of its digits is 11760, while the sum is 34.

The square root of 51731782 is about 7192.4809349765. The cubic root of 51731782 is about 372.6082612521.

The spelling of 51731782 in words is "fifty-one million, seven hundred thirty-one thousand, seven hundred eighty-two".