13570561 has 2 divisors, whose sum is σ = 13570562. Its totient is φ = 13570560.

The previous prime is 13570547. The next prime is 13570567. The reversal of 13570561 is 16507531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 1874161 = 3420^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 13570561 - 2⁹ = 13570049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13570567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6785280 + 6785281.

It is an arithmetic number, because the mean of its divisors is an integer number (6785281).

Almost surely, 2^13570561 is an apocalyptic number.

It is an amenable number.

13570561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13570561 is an equidigital number, since it uses as much as digits as its factorization.

13570561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 13570561 is about 3683.8242357637. The cubic root of 13570561 is about 238.5242838088.

The spelling of 13570561 in words is "thirteen million, five hundred seventy thousand, five hundred sixty-one".