135188553 has 8 divisors (see below), whose sum is σ = 189738400. Its totient is φ = 85382208.

The previous prime is 135188533. The next prime is 135188593. The reversal of 135188553 is 355881531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135188553 - 2⁸ = 135188297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135188533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185808 + ... + 1185921.

It is an arithmetic number, because the mean of its divisors is an integer number (23717300).

Almost surely, 2^135188553 is an apocalyptic number.

It is an amenable number.

135188553 is a deficient number, since it is larger than the sum of its proper divisors (54549847).

135188553 is a wasteful number, since it uses less digits than its factorization.

135188553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371751.

The product of its digits is 72000, while the sum is 39.

The square root of 135188553 is about 11627.0612366152. The cubic root of 135188553 is about 513.2315033391.

The spelling of 135188553 in words is "one hundred thirty-five million, one hundred eighty-eight thousand, five hundred fifty-three".