57522261521 has 2 divisors, whose sum is σ = 57522261522. Its totient is φ = 57522261520.

The previous prime is 57522261499. The next prime is 57522261551. The reversal of 57522261521 is 12516222575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51354358225 + 6167903296 = 226615^2 + 78536^2 .

It is a cyclic number.

It is not a de Polignac number, because 57522261521 - 2⁶ = 57522261457 is a prime.

It is not a weakly prime, because it can be changed into another prime (57522261551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28761130760 + 28761130761.

It is an arithmetic number, because the mean of its divisors is an integer number (28761130761).

Almost surely, 2^57522261521 is an apocalyptic number.

It is an amenable number.

57522261521 is a deficient number, since it is larger than the sum of its proper divisors (1).

57522261521 is an equidigital number, since it uses as much as digits as its factorization.

57522261521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 38.

The spelling of 57522261521 in words is "fifty-seven billion, five hundred twenty-two million, two hundred sixty-one thousand, five hundred twenty-one".