135453253 has 4 divisors (see below), whose sum is σ = 145872748. Its totient is φ = 125033760.

The previous prime is 135453239. The next prime is 135453257. The reversal of 135453253 is 352354531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352354531 = 107 ⋅3293033.

It can be written as a sum of positive squares in 2 ways, for example, as 78269409 + 57183844 = 8847^2 + 7562^2 .

It is a cyclic number.

It is not a de Polignac number, because 135453253 - 2²¹ = 133356101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135453257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5209728 + ... + 5209753.

It is an arithmetic number, because the mean of its divisors is an integer number (36468187).

Almost surely, 2^135453253 is an apocalyptic number.

135453253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

135453253 is a deficient number, since it is larger than the sum of its proper divisors (10419495).

135453253 is a wasteful number, since it uses less digits than its factorization.

135453253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419494.

The product of its digits is 27000, while the sum is 31.

The square root of 135453253 is about 11638.4385980251. The cubic root of 135453253 is about 513.5662550757.

The spelling of 135453253 in words is "one hundred thirty-five million, four hundred fifty-three thousand, two hundred fifty-three".