135469253 has 4 divisors (see below), whose sum is σ = 135492588. Its totient is φ = 135445920.

The previous prime is 135469211. The next prime is 135469267. The reversal of 135469253 is 352964531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352964531 = 41 ⋅8608891.

It can be written as a sum of positive squares in 2 ways, for example, as 74269924 + 61199329 = 8618^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 135469253 - 2⁶ = 135469189 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 (135469273) 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, 4625 + ... + 17097.

It is an arithmetic number, because the mean of its divisors is an integer number (33873147).

Almost surely, 2^135469253 is an apocalyptic number.

It is an amenable number.

135469253 is a deficient number, since it is larger than the sum of its proper divisors (23335).

135469253 is a wasteful number, since it uses less digits than its factorization.

135469253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23334.

The product of its digits is 97200, while the sum is 38.

The square root of 135469253 is about 11639.1259551566. The cubic root of 135469253 is about 513.5864754258.

It can be divided in two parts, 1354 and 69253, that added together give a palindrome (70607).

The spelling of 135469253 in words is "one hundred thirty-five million, four hundred sixty-nine thousand, two hundred fifty-three".