561622267 has 2 divisors, whose sum is σ = 561622268. Its totient is φ = 561622266.

The previous prime is 561622253. The next prime is 561622279. The reversal of 561622267 is 762226165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561622267 - 2¹⁵ = 561589499 is a prime.

It is not a weakly prime, because it can be changed into another prime (561622367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280811133 + 280811134.

It is an arithmetic number, because the mean of its divisors is an integer number (280811134).

Almost surely, 2^561622267 is an apocalyptic number.

561622267 is a deficient number, since it is larger than the sum of its proper divisors (1).

561622267 is an equidigital number, since it uses as much as digits as its factorization.

561622267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 561622267 is about 23698.5709906737. The cubic root of 561622267 is about 825.0522241810.

The spelling of 561622267 in words is "five hundred sixty-one million, six hundred twenty-two thousand, two hundred sixty-seven".