557545 has 4 divisors (see below), whose sum is σ = 669060. Its totient is φ = 446032.

The previous prime is 557537. The next prime is 557551. The reversal of 557545 is 545755.

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 137641 + 419904 = 371^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 557545 - 2³ = 557537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55750 + ... + 55759.

It is an arithmetic number, because the mean of its divisors is an integer number (167265).

2⁵⁵⁷⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

557545 is a deficient number, since it is larger than the sum of its proper divisors (111515).

557545 is a wasteful number, since it uses less digits than its factorization.

557545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111514.

The product of its digits is 17500, while the sum is 31.

The square root of 557545 is about 746.6893597742. The cubic root of 557545 is about 82.3050800831.

Subtracting from 557545 its product of digits (17500), we obtain a palindrome (540045).

The spelling of 557545 in words is "five hundred fifty-seven thousand, five hundred forty-five".