57172782 has 8 divisors (see below), whose sum is σ = 114345576. Its totient is φ = 19057592.

The previous prime is 57172763. The next prime is 57172783. The reversal of 57172782 is 28727175.

57172782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

57172782 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 57172782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57172783) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4764393 + ... + 4764404.

It is an arithmetic number, because the mean of its divisors is an integer number (14293197).

Almost surely, 2^57172782 is an apocalyptic number.

57172782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57172782 is a wasteful number, since it uses less digits than its factorization.

57172782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528802.

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

The square root of 57172782 is about 7561.2685443648. The cubic root of 57172782 is about 385.2385815314.

The spelling of 57172782 in words is "fifty-seven million, one hundred seventy-two thousand, seven hundred eighty-two".