557813 has 4 divisors (see below), whose sum is σ = 559308. Its totient is φ = 556320.

The previous prime is 557803. The next prime is 557831. The reversal of 557813 is 318755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 305809 = 502^2 + 553^2 .

It is a cyclic number.

It is not a de Polignac number, because 557813 - 2¹⁰ = 556789 is a prime.

It is a super-2 number, since 2×557813² = 622310685938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (139827).

2⁵⁵⁷⁸¹³ is an apocalyptic number.

It is an amenable number.

557813 is a deficient number, since it is larger than the sum of its proper divisors (1495).

557813 is an equidigital number, since it uses as much as digits as its factorization.

557813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its digits is 4200, while the sum is 29.

The square root of 557813 is about 746.8687970454. The cubic root of 557813 is about 82.3182654034.

The spelling of 557813 in words is "five hundred fifty-seven thousand, eight hundred thirteen".