557045 has 4 divisors (see below), whose sum is σ = 668460. Its totient is φ = 445632.

The previous prime is 557041. The next prime is 557057. The reversal of 557045 is 540755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217156 + 339889 = 466^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 557045 - 2² = 557041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557041) 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, 55700 + ... + 55709.

It is an arithmetic number, because the mean of its divisors is an integer number (167115).

2⁵⁵⁷⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

557045 is a deficient number, since it is larger than the sum of its proper divisors (111415).

557045 is a wasteful number, since it uses less digits than its factorization.

557045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111414.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 557045 is about 746.3544734240. The cubic root of 557045 is about 82.2804693056.

Subtracting from 557045 its reverse (540755), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 557045 in words is "five hundred fifty-seven thousand, forty-five".