13556461 has 2 divisors, whose sum is σ = 13556462. Its totient is φ = 13556460.

The previous prime is 13556447. The next prime is 13556471. The reversal of 13556461 is 16465531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10850436 + 2706025 = 3294^2 + 1645^2 .

It is an emirp because it is prime and its reverse (16465531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13556461 - 2¹¹ = 13554413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13556401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6778230 + 6778231.

It is an arithmetic number, because the mean of its divisors is an integer number (6778231).

Almost surely, 2^13556461 is an apocalyptic number.

It is an amenable number.

13556461 is a deficient number, since it is larger than the sum of its proper divisors (1).

13556461 is an equidigital number, since it uses as much as digits as its factorization.

13556461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 13556461 is about 3681.9099663082. The cubic root of 13556461 is about 238.4416451747.

The spelling of 13556461 in words is "thirteen million, five hundred fifty-six thousand, four hundred sixty-one".