57621125520 has 400 divisors, whose sum is σ = 230485926528. Its totient is φ = 13068656640.

The previous prime is 57621125519. The next prime is 57621125537. The reversal of 57621125520 is 2552112675.

57621125520 is a `hidden beast` number, since 5 + 7 + 6 + 2 + 1 + 125 + 520 = 666.

57621125520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5937312 + ... + 5947008.

Almost surely, 2^57621125520 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 57621125520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115242963264).

57621125520 is an abundant number, since it is smaller than the sum of its proper divisors (172864801008).

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

57621125520 is a wasteful number, since it uses less digits than its factorization.

57621125520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9860 (or 9845 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 57621125520 in words is "fifty-seven billion, six hundred twenty-one million, one hundred twenty-five thousand, five hundred twenty".