561434506 has 4 divisors (see below), whose sum is σ = 842151762. Its totient is φ = 280717252.

The previous prime is 561434479. The next prime is 561434513. The reversal of 561434506 is 605434165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 503598481 + 57836025 = 22441^2 + 7605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140358625 + ... + 140358628.

Almost surely, 2^561434506 is an apocalyptic number.

561434506 is a deficient number, since it is larger than the sum of its proper divisors (280717256).

561434506 is a wasteful number, since it uses less digits than its factorization.

561434506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280717255.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 561434506 is about 23694.6092181323. The cubic root of 561434506 is about 824.9602703855.

The spelling of 561434506 in words is "five hundred sixty-one million, four hundred thirty-four thousand, five hundred six".