57225371521 has 16 divisors (see below), whose sum is σ = 60813072000. Its totient is φ = 53695934208.

The previous prime is 57225371503. The next prime is 57225371543. The reversal of 57225371521 is 12517352275.

It is a cyclic number.

It is not a de Polignac number, because 57225371521 - 2⁷ = 57225371393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57225371501) 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, 3317100 + ... + 3334306.

It is an arithmetic number, because the mean of its divisors is an integer number (3800817000).

Almost surely, 2^57225371521 is an apocalyptic number.

It is an amenable number.

57225371521 is a deficient number, since it is larger than the sum of its proper divisors (3587700479).

57225371521 is a wasteful number, since it uses less digits than its factorization.

57225371521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18888.

The product of its digits is 147000, while the sum is 40.

The spelling of 57225371521 in words is "fifty-seven billion, two hundred twenty-five million, three hundred seventy-one thousand, five hundred twenty-one".