13554869 has 2 divisors, whose sum is σ = 13554870. Its totient is φ = 13554868.

The previous prime is 13554833. The next prime is 13554881. The reversal of 13554869 is 96845531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11992369 + 1562500 = 3463^2 + 1250^2 .

It is an emirp because it is prime and its reverse (96845531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13554869 is a prime.

It is a super-2 number, since 2×13554869² = 367468947214322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13554829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777434 + 6777435.

It is an arithmetic number, because the mean of its divisors is an integer number (6777435).

Almost surely, 2^13554869 is an apocalyptic number.

It is an amenable number.

13554869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13554869 is an equidigital number, since it uses as much as digits as its factorization.

13554869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The square root of 13554869 is about 3681.6937678194. The cubic root of 13554869 is about 238.4323110287.

The spelling of 13554869 in words is "thirteen million, five hundred fifty-four thousand, eight hundred sixty-nine".