57225526721 has 4 divisors (see below), whose sum is σ = 62427847344. Its totient is φ = 52023206100.

The previous prime is 57225526627. The next prime is 57225526733. The reversal of 57225526721 is 12762552275.

It is a happy number.

57225526721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57225526721 - 2²² = 57221332417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57225526121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601160295 + ... + 2601160316.

It is an arithmetic number, because the mean of its divisors is an integer number (15606961836).

Almost surely, 2^57225526721 is an apocalyptic number.

It is an amenable number.

57225526721 is a deficient number, since it is larger than the sum of its proper divisors (5202320623).

57225526721 is a wasteful number, since it uses less digits than its factorization.

57225526721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202320622.

The product of its digits is 588000, while the sum is 44.

The spelling of 57225526721 in words is "fifty-seven billion, two hundred twenty-five million, five hundred twenty-six thousand, seven hundred twenty-one".