57523921056 has 144 divisors (see below), whose sum is σ = 187230947904. Its totient is φ = 16410949632.

The previous prime is 57523921043. The next prime is 57523921057. The reversal of 57523921056 is 65012932575.

57523921056 is a `hidden beast` number, since 57 + 523 + 9 + 21 + 0 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (57523921057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356040 + ... + 1397816.

It is an arithmetic number, because the mean of its divisors is an integer number (1300214916).

Almost surely, 2^57523921056 is an apocalyptic number.

57523921056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57523921056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93615473952).

57523921056 is an abundant number, since it is smaller than the sum of its proper divisors (129707026848).

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

57523921056 is a wasteful number, since it uses less digits than its factorization.

57523921056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42483 (or 42472 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 57523921056 in words is "fifty-seven billion, five hundred twenty-three million, nine hundred twenty-one thousand, fifty-six".