561333489 has 32 divisors (see below), whose sum is σ = 804712320. Its totient is φ = 346816512.

The previous prime is 561333467. The next prime is 561333491. The reversal of 561333489 is 984333165.

It is not a de Polignac number, because 561333489 - 2¹⁵ = 561300721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561333489.

It is not an unprimeable number, because it can be changed into a prime (561333499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1480902 + ... + 1481280.

It is an arithmetic number, because the mean of its divisors is an integer number (25147260).

Almost surely, 2^561333489 is an apocalyptic number.

It is an amenable number.

561333489 is a deficient number, since it is larger than the sum of its proper divisors (243378831).

561333489 is a wasteful number, since it uses less digits than its factorization.

561333489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its digits is 233280, while the sum is 42.

The square root of 561333489 is about 23692.4774770390. The cubic root of 561333489 is about 824.9107899865.

The spelling of 561333489 in words is "five hundred sixty-one million, three hundred thirty-three thousand, four hundred eighty-nine".