557323807 has 2 divisors, whose sum is σ = 557323808. Its totient is φ = 557323806.

The previous prime is 557323759. The next prime is 557323841. The reversal of 557323807 is 708323755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557323807 - 2¹¹ = 557321759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557323807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557323007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278661903 + 278661904.

It is an arithmetic number, because the mean of its divisors is an integer number (278661904).

Almost surely, 2^557323807 is an apocalyptic number.

557323807 is a deficient number, since it is larger than the sum of its proper divisors (1).

557323807 is an equidigital number, since it uses as much as digits as its factorization.

557323807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 557323807 is about 23607.7065171524. The cubic root of 557323807 is about 822.9419443523.

The spelling of 557323807 in words is "five hundred fifty-seven million, three hundred twenty-three thousand, eight hundred seven".