561327071 has 2 divisors, whose sum is σ = 561327072. Its totient is φ = 561327070.

The previous prime is 561327043. The next prime is 561327101. The reversal of 561327071 is 170723165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561327071 - 2⁶ = 561327007 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 (561327971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280663535 + 280663536.

It is an arithmetic number, because the mean of its divisors is an integer number (280663536).

Almost surely, 2^561327071 is an apocalyptic number.

561327071 is a deficient number, since it is larger than the sum of its proper divisors (1).

561327071 is an equidigital number, since it uses as much as digits as its factorization.

561327071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 561327071 is about 23692.3420328173. The cubic root of 561327071 is about 824.9076461051.

The spelling of 561327071 in words is "five hundred sixty-one million, three hundred twenty-seven thousand, seventy-one".