557426 has 8 divisors (see below), whose sum is σ = 844140. Its totient is φ = 276048.

The previous prime is 557423. The next prime is 557443. The reversal of 557426 is 624755.

557426 = 210² + 211² + ... + 221².

It can be written as a sum of positive squares in 2 ways, for example, as 555025 + 2401 = 745^2 + 49^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 557426.

It is not an unprimeable number, because it can be changed into a prime (557423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 1496.

2⁵⁵⁷⁴²⁶ is an apocalyptic number.

557426 is a deficient number, since it is larger than the sum of its proper divisors (286714).

557426 is a wasteful number, since it uses less digits than its factorization.

557426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668.

The product of its digits is 8400, while the sum is 29.

The square root of 557426 is about 746.6096704437. The cubic root of 557426 is about 82.2992240527.

The spelling of 557426 in words is "five hundred fifty-seven thousand, four hundred twenty-six".