57150207221 has 2 divisors, whose sum is σ = 57150207222. Its totient is φ = 57150207220.

The previous prime is 57150207211. The next prime is 57150207227. The reversal of 57150207221 is 12270205175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57127692196 + 22515025 = 239014^2 + 4745^2 .

It is a cyclic number.

It is not a de Polignac number, because 57150207221 - 2⁶ = 57150207157 is a prime.

It is a super-2 number, since 2×57150207221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57150207227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28575103610 + 28575103611.

It is an arithmetic number, because the mean of its divisors is an integer number (28575103611).

Almost surely, 2^57150207221 is an apocalyptic number.

It is an amenable number.

57150207221 is a deficient number, since it is larger than the sum of its proper divisors (1).

57150207221 is an equidigital number, since it uses as much as digits as its factorization.

57150207221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 32.

The spelling of 57150207221 in words is "fifty-seven billion, one hundred fifty million, two hundred seven thousand, two hundred twenty-one".