13522987 has 2 divisors, whose sum is σ = 13522988. Its totient is φ = 13522986.

The previous prime is 13522979. The next prime is 13523009. The reversal of 13522987 is 78922531.

13522987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (78922531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13522987 - 2³ = 13522979 is a prime.

It is not a weakly prime, because it can be changed into another prime (13522967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761493 + 6761494.

It is an arithmetic number, because the mean of its divisors is an integer number (6761494).

Almost surely, 2^13522987 is an apocalyptic number.

13522987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13522987 is an equidigital number, since it uses as much as digits as its factorization.

13522987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 13522987 is about 3677.3614181910. The cubic root of 13522987 is about 238.2452277833.

The spelling of 13522987 in words is "thirteen million, five hundred twenty-two thousand, nine hundred eighty-seven".