57172608 has 128 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 18708480.

The previous prime is 57172607. The next prime is 57172613. The reversal of 57172608 is 80627175.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (57172607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245260 + ... + 245492.

It is an arithmetic number, because the mean of its divisors is an integer number (1342575).

Almost surely, 2^57172608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57172608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85924800).

57172608 is an abundant number, since it is smaller than the sum of its proper divisors (114676992).

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

57172608 is a wasteful number, since it uses less digits than its factorization.

57172608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 57172608 is about 7561.2570383502. The cubic root of 57172608 is about 385.2381907185.

The spelling of 57172608 in words is "fifty-seven million, one hundred seventy-two thousand, six hundred eight".