135544459 has 2 divisors, whose sum is σ = 135544460. Its totient is φ = 135544458.

The previous prime is 135544457. The next prime is 135544469. The reversal of 135544459 is 954445531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135544459 - 2¹ = 135544457 is a prime.

Together with 135544457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135544457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67772229 + 67772230.

It is an arithmetic number, because the mean of its divisors is an integer number (67772230).

Almost surely, 2^135544459 is an apocalyptic number.

135544459 is a deficient number, since it is larger than the sum of its proper divisors (1).

135544459 is an equidigital number, since it uses as much as digits as its factorization.

135544459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 135544459 is about 11642.3562477705. The cubic root of 135544459 is about 513.6814973299.

The spelling of 135544459 in words is "one hundred thirty-five million, five hundred forty-four thousand, four hundred fifty-nine".