557506111 has 2 divisors, whose sum is σ = 557506112. Its totient is φ = 557506110.

The previous prime is 557506097. The next prime is 557506123. The reversal of 557506111 is 111605755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557506111 - 2⁷ = 557505983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557566111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278753055 + 278753056.

It is an arithmetic number, because the mean of its divisors is an integer number (278753056).

Almost surely, 2^557506111 is an apocalyptic number.

557506111 is a deficient number, since it is larger than the sum of its proper divisors (1).

557506111 is an equidigital number, since it uses as much as digits as its factorization.

557506111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 557506111 is about 23611.5673135012. The cubic root of 557506111 is about 823.0316643386.

The spelling of 557506111 in words is "five hundred fifty-seven million, five hundred six thousand, one hundred eleven".