561383165 has 8 divisors (see below), whose sum is σ = 769896960. Its totient is φ = 384948432.

The previous prime is 561383143. The next prime is 561383167.

561383165 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 561383165 - 2⁸ = 561382909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561383167) 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, 8019725 + ... + 8019794.

It is an arithmetic number, because the mean of its divisors is an integer number (96237120).

Almost surely, 2^561383165 is an apocalyptic number.

It is an amenable number.

561383165 is a deficient number, since it is larger than the sum of its proper divisors (208513795).

561383165 is a wasteful number, since it uses less digits than its factorization.

561383165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16039531.

The product of its digits is 64800, while the sum is 38.

The square root of 561383165 is about 23693.5258034764. The cubic root of 561383165 is about 824.9351231505.

The spelling of 561383165 in words is "five hundred sixty-one million, three hundred eighty-three thousand, one hundred sixty-five".