557965 has 4 divisors (see below), whose sum is σ = 669564. Its totient is φ = 446368.

The previous prime is 557927. The next prime is 557981. The reversal of 557965 is 569755.

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 393129 + 164836 = 627^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 557965 - 2¹⁷ = 426893 is a prime.

It is a super-2 number, since 2×557965² = 622649882450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 55792 + ... + 55801.

It is an arithmetic number, because the mean of its divisors is an integer number (167391).

2⁵⁵⁷⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

557965 is a deficient number, since it is larger than the sum of its proper divisors (111599).

557965 is a wasteful number, since it uses less digits than its factorization.

557965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111598.

The product of its digits is 47250, while the sum is 37.

The square root of 557965 is about 746.9705482815. The cubic root of 557965 is about 82.3257417679.

It can be divided in two parts, 5 and 57965, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 557965 in words is "five hundred fifty-seven thousand, nine hundred sixty-five".