51782164 has 24 divisors (see below), whose sum is σ = 104328000. Its totient is φ = 22028736.

The previous prime is 51782149. The next prime is 51782179. The reversal of 51782164 is 46128715.

It is an interprime number because it is at equal distance from previous prime (51782149) and next prime (51782179).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2914 + ... + 10585.

It is an arithmetic number, because the mean of its divisors is an integer number (4347000).

Almost surely, 2^51782164 is an apocalyptic number.

It is an amenable number.

51782164 is an abundant number, since it is smaller than the sum of its proper divisors (52545836).

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

51782164 is a wasteful number, since it uses less digits than its factorization.

51782164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13647 (or 13645 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 51782164 is about 7195.9824902511. The cubic root of 51782164 is about 372.7291840689.

The spelling of 51782164 in words is "fifty-one million, seven hundred eighty-two thousand, one hundred sixty-four".