57521224066 has 8 divisors (see below), whose sum is σ = 86322369420. Its totient is φ = 28747100928.

The previous prime is 57521224063. The next prime is 57521224153. The reversal of 57521224066 is 66042212575.

It can be written as a sum of positive squares in 2 ways, for example, as 44850344841 + 12670879225 = 211779^2 + 112565^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57521224063) 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, 6750231 + ... + 6758746.

Almost surely, 2^57521224066 is an apocalyptic number.

57521224066 is a deficient number, since it is larger than the sum of its proper divisors (28801145354).

57521224066 is a wasteful number, since it uses less digits than its factorization.

57521224066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13511108.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 57521224066 in words is "fifty-seven billion, five hundred twenty-one million, two hundred twenty-four thousand, sixty-six".