135555513 has 4 divisors (see below), whose sum is σ = 180740688. Its totient is φ = 90370340.

The previous prime is 135555493. The next prime is 135555521. The reversal of 135555513 is 315555531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315555531 = 3 ⋅105185177.

It is a cyclic number.

It is not a de Polignac number, because 135555513 - 2⁶ = 135555449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135555523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22592583 + ... + 22592588.

It is an arithmetic number, because the mean of its divisors is an integer number (45185172).

Almost surely, 2^135555513 is an apocalyptic number.

It is an amenable number.

135555513 is a deficient number, since it is larger than the sum of its proper divisors (45185175).

135555513 is an equidigital number, since it uses as much as digits as its factorization.

135555513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45185174.

The product of its digits is 28125, while the sum is 33.

The square root of 135555513 is about 11642.8309701722. The cubic root of 135555513 is about 513.6954609671.

The spelling of 135555513 in words is "one hundred thirty-five million, five hundred fifty-five thousand, five hundred thirteen".