561494535 has 32 divisors (see below), whose sum is σ = 1027656192. Its totient is φ = 256452480.

The previous prime is 561494519. The next prime is 561494543. The reversal of 561494535 is 535494165.

It is not a de Polignac number, because 561494535 - 2⁴ = 561494519 is a prime.

It is a super-2 number, since 2×561494535² = 630552225669732450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181905 + ... + 184965.

It is an arithmetic number, because the mean of its divisors is an integer number (32114256).

Almost surely, 2^561494535 is an apocalyptic number.

561494535 is a deficient number, since it is larger than the sum of its proper divisors (466161657).

561494535 is a wasteful number, since it uses less digits than its factorization.

561494535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823.

The product of its digits is 324000, while the sum is 42.

The square root of 561494535 is about 23695.8759070012. The cubic root of 561494535 is about 824.9896711287.

The spelling of 561494535 in words is "five hundred sixty-one million, four hundred ninety-four thousand, five hundred thirty-five".