557621017 has 2 divisors, whose sum is σ = 557621018. Its totient is φ = 557621016.

The previous prime is 557620957. The next prime is 557621041. The reversal of 557621017 is 710126755.

It is a happy number.

557621017 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., 518882841 + 38738176 = 22779^2 + 6224^2 .

It is a cyclic number.

It is not a de Polignac number, because 557621017 - 2²⁷ = 423403289 is a prime.

It is a super-2 number, since 2×557621017² = 621882397200228578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (557621917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278810508 + 278810509.

It is an arithmetic number, because the mean of its divisors is an integer number (278810509).

Almost surely, 2^557621017 is an apocalyptic number.

It is an amenable number.

557621017 is a deficient number, since it is larger than the sum of its proper divisors (1).

557621017 is an equidigital number, since it uses as much as digits as its factorization.

557621017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 557621017 is about 23614.0004446515. Note that the first 3 decimals coincide. The cubic root of 557621017 is about 823.0882046934.

The spelling of 557621017 in words is "five hundred fifty-seven million, six hundred twenty-one thousand, seventeen".