561101207 has 2 divisors, whose sum is σ = 561101208. Its totient is φ = 561101206.

The previous prime is 561101131. The next prime is 561101221. The reversal of 561101207 is 702101165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561101207 - 2²⁴ = 544323991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561101237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280550603 + 280550604.

It is an arithmetic number, because the mean of its divisors is an integer number (280550604).

Almost surely, 2^561101207 is an apocalyptic number.

561101207 is a deficient number, since it is larger than the sum of its proper divisors (1).

561101207 is an equidigital number, since it uses as much as digits as its factorization.

561101207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 561101207 is about 23687.5749497495. The cubic root of 561101207 is about 824.7969905144.

The spelling of 561101207 in words is "five hundred sixty-one million, one hundred one thousand, two hundred seven".