576561 has 4 divisors (see below), whose sum is σ = 768752. Its totient is φ = 384372.

The previous prime is 576553. The next prime is 576577. The reversal of 576561 is 165675.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 576561 - 2³ = 576553 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (576551) 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, 96091 + ... + 96096.

It is an arithmetic number, because the mean of its divisors is an integer number (192188).

2⁵⁷⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

576561 is a deficient number, since it is larger than the sum of its proper divisors (192191).

576561 is a wasteful number, since it uses less digits than its factorization.

576561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192190.

The product of its digits is 6300, while the sum is 30.

The square root of 576561 is about 759.3161396941. The cubic root of 576561 is about 83.2303563569.

The spelling of 576561 in words is "five hundred seventy-six thousand, five hundred sixty-one".