57573521 has 2 divisors, whose sum is σ = 57573522. Its totient is φ = 57573520.

The previous prime is 57573493. The next prime is 57573539. The reversal of 57573521 is 12537575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56085121 + 1488400 = 7489^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 57573521 - 2⁶ = 57573457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57573721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28786760 + 28786761.

It is an arithmetic number, because the mean of its divisors is an integer number (28786761).

Almost surely, 2^57573521 is an apocalyptic number.

It is an amenable number.

57573521 is a deficient number, since it is larger than the sum of its proper divisors (1).

57573521 is an equidigital number, since it uses as much as digits as its factorization.

57573521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36750, while the sum is 35.

The square root of 57573521 is about 7587.7217265791. The cubic root of 57573521 is about 386.1365660832.

The spelling of 57573521 in words is "fifty-seven million, five hundred seventy-three thousand, five hundred twenty-one".