557126 has 4 divisors (see below), whose sum is σ = 835692. Its totient is φ = 278562.

The previous prime is 557093. The next prime is 557153. The reversal of 557126 is 621755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621755 = 5 ⋅124351.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 557095 and 557104.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 557126.

It is an unprimeable number.

557126 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139280 + ... + 139283.

It is an arithmetic number, because the mean of its divisors is an integer number (208923).

2⁵⁵⁷¹²⁶ is an apocalyptic number.

557126 is a deficient number, since it is larger than the sum of its proper divisors (278566).

557126 is a wasteful number, since it uses less digits than its factorization.

557126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278565.

The product of its digits is 2100, while the sum is 26.

The square root of 557126 is about 746.4087352115. The cubic root of 557126 is about 82.2844572509.

The spelling of 557126 in words is "five hundred fifty-seven thousand, one hundred twenty-six".