561294589 has 4 divisors (see below), whose sum is σ = 561388960. Its totient is φ = 561200220.

The previous prime is 561294563. The next prime is 561294619. The reversal of 561294589 is 985492165.

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 a cyclic number.

It is not a de Polignac number, because 561294589 - 2⁹ = 561294077 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561294509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37617 + ... + 50374.

It is an arithmetic number, because the mean of its divisors is an integer number (140347240).

Almost surely, 2^561294589 is an apocalyptic number.

It is an amenable number.

561294589 is a deficient number, since it is larger than the sum of its proper divisors (94371).

561294589 is an equidigital number, since it uses as much as digits as its factorization.

561294589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94370.

The product of its digits is 777600, while the sum is 49.

The square root of 561294589 is about 23691.6565271405. The cubic root of 561294589 is about 824.8917343082.

The spelling of 561294589 in words is "five hundred sixty-one million, two hundred ninety-four thousand, five hundred eighty-nine".