561444897 has 8 divisors (see below), whose sum is σ = 806177344. Its totient is φ = 345504528.

The previous prime is 561444893. The next prime is 561444899. The reversal of 561444897 is 798444165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561444897 - 2² = 561444893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561444893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7197973 + ... + 7198050.

It is an arithmetic number, because the mean of its divisors is an integer number (100772168).

Almost surely, 2^561444897 is an apocalyptic number.

It is an amenable number.

561444897 is a deficient number, since it is larger than the sum of its proper divisors (244732447).

561444897 is a wasteful number, since it uses less digits than its factorization.

561444897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14396039.

The product of its digits is 967680, while the sum is 48.

The square root of 561444897 is about 23694.8284864018. The cubic root of 561444897 is about 824.9653597944.

The spelling of 561444897 in words is "five hundred sixty-one million, four hundred forty-four thousand, eight hundred ninety-seven".