557279797 has 2 divisors, whose sum is σ = 557279798. Its totient is φ = 557279796.

The previous prime is 557279783. The next prime is 557279809. The reversal of 557279797 is 797972755.

557279797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279257521 + 278022276 = 16711^2 + 16674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557279797 is a prime.

It is a super-2 number, since 2×557279797² = 621121544288722418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557279717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278639898 + 278639899.

It is an arithmetic number, because the mean of its divisors is an integer number (278639899).

Almost surely, 2^557279797 is an apocalyptic number.

It is an amenable number.

557279797 is a deficient number, since it is larger than the sum of its proper divisors (1).

557279797 is an equidigital number, since it uses as much as digits as its factorization.

557279797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9724050, while the sum is 58.

The square root of 557279797 is about 23606.7743878743. The cubic root of 557279797 is about 822.9202821229.

The spelling of 557279797 in words is "five hundred fifty-seven million, two hundred seventy-nine thousand, seven hundred ninety-seven".