557997 has 16 divisors (see below), whose sum is σ = 835392. Its totient is φ = 328320.

The previous prime is 557987. The next prime is 558007. The reversal of 557997 is 799755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (557987) and next prime (558007).

It is not a de Polignac number, because 557997 - 2⁴ = 557981 is a prime.

It is a super-2 number, since 2×557997² = 622721304018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (52212).

2⁵⁵⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

557997 is a deficient number, since it is larger than the sum of its proper divisors (277395).

557997 is a wasteful number, since it uses less digits than its factorization.

557997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its digits is 99225, while the sum is 42.

The square root of 557997 is about 746.9919678283. The cubic root of 557997 is about 82.3273155664.

The spelling of 557997 in words is "five hundred fifty-seven thousand, nine hundred ninety-seven".