13058561 has 2 divisors, whose sum is σ = 13058562. Its totient is φ = 13058560.

The previous prime is 13058557. The next prime is 13058581. The reversal of 13058561 is 16585031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8814961 + 4243600 = 2969^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 13058561 - 2² = 13058557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13058581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6529280 + 6529281.

It is an arithmetic number, because the mean of its divisors is an integer number (6529281).

Almost surely, 2^13058561 is an apocalyptic number.

It is an amenable number.

13058561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13058561 is an equidigital number, since it uses as much as digits as its factorization.

13058561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 13058561 is about 3613.6630999583. The cubic root of 13058561 is about 235.4860079167.

The spelling of 13058561 in words is "thirteen million, fifty-eight thousand, five hundred sixty-one".