13544987 has 2 divisors, whose sum is σ = 13544988. Its totient is φ = 13544986.

The previous prime is 13544981. The next prime is 13545011. The reversal of 13544987 is 78944531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13544987 - 2⁸ = 13544731 is a prime.

It is not a weakly prime, because it can be changed into another prime (13544981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6772493 + 6772494.

It is an arithmetic number, because the mean of its divisors is an integer number (6772494).

Almost surely, 2^13544987 is an apocalyptic number.

13544987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13544987 is an equidigital number, since it uses as much as digits as its factorization.

13544987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 13544987 is about 3680.3514777803. The cubic root of 13544987 is about 238.3743549562.

The spelling of 13544987 in words is "thirteen million, five hundred forty-four thousand, nine hundred eighty-seven".