135518253 has 16 divisors (see below), whose sum is σ = 196781760. Its totient is φ = 82456704.

The previous prime is 135518219. The next prime is 135518261. The reversal of 135518253 is 352815531.

It is not a de Polignac number, because 135518253 - 2⁹ = 135517741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135518293) 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, 16051 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (12298860).

Almost surely, 2^135518253 is an apocalyptic number.

135518253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

135518253 is a deficient number, since it is larger than the sum of its proper divisors (61263507).

135518253 is a wasteful number, since it uses less digits than its factorization.

135518253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39148.

The product of its digits is 18000, while the sum is 33.

The square root of 135518253 is about 11641.2307339044. The cubic root of 135518253 is about 513.6483903453.

The spelling of 135518253 in words is "one hundred thirty-five million, five hundred eighteen thousand, two hundred fifty-three".