561167027 has 2 divisors, whose sum is σ = 561167028. Its totient is φ = 561167026.

The previous prime is 561166997. The next prime is 561167029. The reversal of 561167027 is 720761165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561167027 - 2¹⁰ = 561166003 is a prime.

Together with 561167029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561167029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280583513 + 280583514.

It is an arithmetic number, because the mean of its divisors is an integer number (280583514).

Almost surely, 2^561167027 is an apocalyptic number.

561167027 is a deficient number, since it is larger than the sum of its proper divisors (1).

561167027 is an equidigital number, since it uses as much as digits as its factorization.

561167027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 561167027 is about 23688.9642449812. The cubic root of 561167027 is about 824.8292402016.

The spelling of 561167027 in words is "five hundred sixty-one million, one hundred sixty-seven thousand, twenty-seven".