569981161 has 2 divisors, whose sum is σ = 569981162. Its totient is φ = 569981160.

The previous prime is 569981119. The next prime is 569981177. The reversal of 569981161 is 161189965.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566202025 + 3779136 = 23795^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 569981161 - 2¹³ = 569972969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (569984161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284990580 + 284990581.

It is an arithmetic number, because the mean of its divisors is an integer number (284990581).

Almost surely, 2^569981161 is an apocalyptic number.

It is an amenable number.

569981161 is a deficient number, since it is larger than the sum of its proper divisors (1).

569981161 is an equidigital number, since it uses as much as digits as its factorization.

569981161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 46.

The square root of 569981161 is about 23874.2782299277. The cubic root of 569981161 is about 829.1252995442.

The spelling of 569981161 in words is "five hundred sixty-nine million, nine hundred eighty-one thousand, one hundred sixty-one".