557132561 has 2 divisors, whose sum is σ = 557132562. Its totient is φ = 557132560.

The previous prime is 557132531. The next prime is 557132621. The reversal of 557132561 is 165231755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546110161 + 11022400 = 23369^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 557132561 - 2¹⁴ = 557116177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557132531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278566280 + 278566281.

It is an arithmetic number, because the mean of its divisors is an integer number (278566281).

Almost surely, 2^557132561 is an apocalyptic number.

It is an amenable number.

557132561 is a deficient number, since it is larger than the sum of its proper divisors (1).

557132561 is an equidigital number, since it uses as much as digits as its factorization.

557132561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 35.

The square root of 557132561 is about 23603.6556702558. The cubic root of 557132561 is about 822.8478025752.

The spelling of 557132561 in words is "five hundred fifty-seven million, one hundred thirty-two thousand, five hundred sixty-one".