135516459 has 16 divisors (see below), whose sum is σ = 199848992. Its totient is φ = 81139968.

The previous prime is 135516457. The next prime is 135516467. The reversal of 135516459 is 954615531.

It is a happy number.

It is not a de Polignac number, because 135516459 - 2¹ = 135516457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135516457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45514 + ... + 48399.

It is an arithmetic number, because the mean of its divisors is an integer number (12490562).

Almost surely, 2^135516459 is an apocalyptic number.

135516459 is a deficient number, since it is larger than the sum of its proper divisors (64332533).

135516459 is a wasteful number, since it uses less digits than its factorization.

135516459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93966.

The product of its digits is 81000, while the sum is 39.

The square root of 135516459 is about 11641.1536799408. The cubic root of 135516459 is about 513.6461237643.

The spelling of 135516459 in words is "one hundred thirty-five million, five hundred sixteen thousand, four hundred fifty-nine".