561167273 has 2 divisors, whose sum is σ = 561167274. Its totient is φ = 561167272.

The previous prime is 561167237. The next prime is 561167291. The reversal of 561167273 is 372761165.

Together with previous prime (561167237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483868009 + 77299264 = 21997^2 + 8792^2 .

It is a cyclic number.

It is not a de Polignac number, because 561167273 - 2¹⁸ = 560905129 is a prime.

It is not a weakly prime, because it can be changed into another prime (561167203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280583636 + 280583637.

It is an arithmetic number, because the mean of its divisors is an integer number (280583637).

Almost surely, 2^561167273 is an apocalyptic number.

It is an amenable number.

561167273 is a deficient number, since it is larger than the sum of its proper divisors (1).

561167273 is an equidigital number, since it uses as much as digits as its factorization.

561167273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 561167273 is about 23688.9694372719. The cubic root of 561167273 is about 824.8293607290.

The spelling of 561167273 in words is "five hundred sixty-one million, one hundred sixty-seven thousand, two hundred seventy-three".