561456527 has 2 divisors, whose sum is σ = 561456528. Its totient is φ = 561456526.

The previous prime is 561456523. The next prime is 561456619. The reversal of 561456527 is 725654165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561456527 - 2² = 561456523 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561456521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280728263 + 280728264.

It is an arithmetic number, because the mean of its divisors is an integer number (280728264).

Almost surely, 2^561456527 is an apocalyptic number.

561456527 is a deficient number, since it is larger than the sum of its proper divisors (1).

561456527 is an equidigital number, since it uses as much as digits as its factorization.

561456527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 41.

The square root of 561456527 is about 23695.0738973315. The cubic root of 561456527 is about 824.9710559787.

The spelling of 561456527 in words is "five hundred sixty-one million, four hundred fifty-six thousand, five hundred twenty-seven".