57209501172 has 24 divisors (see below), whose sum is σ = 133593241600. Its totient is φ = 19054918656.

The previous prime is 57209501143. The next prime is 57209501177. The reversal of 57209501172 is 27110590275.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 57209501172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57209501177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1848397 + ... + 1879092.

Almost surely, 2^57209501172 is an apocalyptic number.

It is an amenable number.

57209501172 is an abundant number, since it is smaller than the sum of its proper divisors (76383740428).

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

57209501172 is a wasteful number, since it uses less digits than its factorization.

57209501172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728775 (or 3728773 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 57209501172 in words is "fifty-seven billion, two hundred nine million, five hundred one thousand, one hundred seventy-two".