557369 has 2 divisors, whose sum is σ = 557370. Its totient is φ = 557368.

The previous prime is 557339. The next prime is 557371. The reversal of 557369 is 963755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319225 + 238144 = 565^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 557369 - 2¹⁶ = 491833 is a prime.

It is a super-2 number, since 2×557369² = 621320404322, which contains 22 as substring.

Together with 557371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278684 + 278685.

It is an arithmetic number, because the mean of its divisors is an integer number (278685).

2⁵⁵⁷³⁶⁹ is an apocalyptic number.

It is an amenable number.

557369 is a deficient number, since it is larger than the sum of its proper divisors (1).

557369 is an equidigital number, since it uses as much as digits as its factorization.

557369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 35.

The square root of 557369 is about 746.5714969110. The cubic root of 557369 is about 82.2964187681.

The spelling of 557369 in words is "five hundred fifty-seven thousand, three hundred sixty-nine".