57782172 has 36 divisors (see below), whose sum is σ = 156838920. Its totient is φ = 16509024.

The previous prime is 57782149. The next prime is 57782177. The reversal of 57782172 is 27128775.

It is a self number, because there is not a number n which added to its sum of digits gives 57782172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57782177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48547 + ... + 49722.

Almost surely, 2^57782172 is an apocalyptic number.

It is an amenable number.

57782172 is an abundant number, since it is smaller than the sum of its proper divisors (99056748).

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

57782172 is a wasteful number, since it uses less digits than its factorization.

57782172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98290 (or 98281 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 57782172 is about 7601.4585442532. The cubic root of 57782172 is about 386.6024668812.

The spelling of 57782172 in words is "fifty-seven million, seven hundred eighty-two thousand, one hundred seventy-two".