561001065 has 8 divisors (see below), whose sum is σ = 897601728. Its totient is φ = 299200560.

The previous prime is 561001057. The next prime is 561001109. The reversal of 561001065 is 560100165.

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

It is not a de Polignac number, because 561001065 - 2³ = 561001057 is a prime.

It is a super-2 number, since 2×561001065² = 629444389862268450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18700021 + ... + 18700050.

It is an arithmetic number, because the mean of its divisors is an integer number (112200216).

Almost surely, 2^561001065 is an apocalyptic number.

It is an amenable number.

561001065 is a deficient number, since it is larger than the sum of its proper divisors (336600663).

561001065 is a wasteful number, since it uses less digits than its factorization.

561001065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37400079.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 561001065 is about 23685.4610468110. The cubic root of 561001065 is about 824.7479193109.

Subtracting from 561001065 its product of nonzero digits (900), we obtain a palindrome (561000165).

The spelling of 561001065 in words is "five hundred sixty-one million, one thousand, sixty-five".