57457553 has 2 divisors, whose sum is σ = 57457554. Its totient is φ = 57457552.

The previous prime is 57457513. The next prime is 57457571. The reversal of 57457553 is 35575475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56670784 + 786769 = 7528^2 + 887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57457553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57457553.

It is not a weakly prime, because it can be changed into another prime (57457513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28728776 + 28728777.

It is an arithmetic number, because the mean of its divisors is an integer number (28728777).

Almost surely, 2^57457553 is an apocalyptic number.

It is an amenable number.

57457553 is a deficient number, since it is larger than the sum of its proper divisors (1).

57457553 is an equidigital number, since it uses as much as digits as its factorization.

57457553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367500, while the sum is 41.

The square root of 57457553 is about 7580.0760550274. The cubic root of 57457553 is about 385.8771320932.

The spelling of 57457553 in words is "fifty-seven million, four hundred fifty-seven thousand, five hundred fifty-three".