557761943 has 2 divisors, whose sum is σ = 557761944. Its totient is φ = 557761942.

The previous prime is 557761913. The next prime is 557761969. The reversal of 557761943 is 349167755.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557761943 - 2⁶ = 557761879 is a prime.

It is a super-2 number, since 2×557761943² = 622196770118270498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557761903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278880971 + 278880972.

It is an arithmetic number, because the mean of its divisors is an integer number (278880972).

Almost surely, 2^557761943 is an apocalyptic number.

557761943 is a deficient number, since it is larger than the sum of its proper divisors (1).

557761943 is an equidigital number, since it uses as much as digits as its factorization.

557761943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The square root of 557761943 is about 23616.9842062868. The cubic root of 557761943 is about 823.1575377796.

The spelling of 557761943 in words is "five hundred fifty-seven million, seven hundred sixty-one thousand, nine hundred forty-three".