557305 has 8 divisors (see below), whose sum is σ = 764352. Its totient is φ = 382128.

The previous prime is 557303. The next prime is 557309. The reversal of 557305 is 503755.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 557305 - 2¹ = 557303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 557305.

It is not an unprimeable number, because it can be changed into a prime (557303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (95544).

2⁵⁵⁷³⁰⁵ is an apocalyptic number.

It is an amenable number.

557305 is a deficient number, since it is larger than the sum of its proper divisors (207047).

557305 is a wasteful number, since it uses less digits than its factorization.

557305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15935.

The product of its (nonzero) digits is 2625, while the sum is 25.

The square root of 557305 is about 746.5286330744. The cubic root of 557305 is about 82.2932687470.

The spelling of 557305 in words is "five hundred fifty-seven thousand, three hundred five".