561791159 has 4 divisors (see below), whose sum is σ = 561885480. Its totient is φ = 561696840.

The previous prime is 561791147. The next prime is 561791201. The reversal of 561791159 is 951197165.

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

It is a cyclic number.

It is not a de Polignac number, because 561791159 - 2¹² = 561787063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561791119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37577 + ... + 50354.

It is an arithmetic number, because the mean of its divisors is an integer number (140471370).

Almost surely, 2^561791159 is an apocalyptic number.

561791159 is a deficient number, since it is larger than the sum of its proper divisors (94321).

561791159 is an equidigital number, since it uses as much as digits as its factorization.

561791159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94320.

The product of its digits is 85050, while the sum is 44.

The square root of 561791159 is about 23702.1340600377. The cubic root of 561791159 is about 825.1349195932.

The spelling of 561791159 in words is "five hundred sixty-one million, seven hundred ninety-one thousand, one hundred fifty-nine".