57172561952 has 384 divisors, whose sum is σ = 140251668480. Its totient is φ = 22832409600.

The previous prime is 57172561891. The next prime is 57172561969. The reversal of 57172561952 is 25916527175.

Its product of digits (1323000) is a multiple of the sum of its prime factors (189).

It is a self number, because there is not a number n which added to its sum of digits gives 57172561952.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1078727558 + ... + 1078727610.

It is an arithmetic number, because the mean of its divisors is an integer number (365238720).

Almost surely, 2^57172561952 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 57172561952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70125834240).

57172561952 is an abundant number, since it is smaller than the sum of its proper divisors (83079106528).

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

57172561952 is a wasteful number, since it uses less digits than its factorization.

57172561952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 159 counting only the distinct ones).

The product of its digits is 1323000, while the sum is 50.

The spelling of 57172561952 in words is "fifty-seven billion, one hundred seventy-two million, five hundred sixty-one thousand, nine hundred fifty-two".