135532253 has 4 divisors (see below), whose sum is σ = 135942048. Its totient is φ = 135122460.

The previous prime is 135532247. The next prime is 135532303. The reversal of 135532253 is 352235531.

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: 352235531 = 47 ⋅7494373.

It is a cyclic number.

It is not a de Polignac number, because 135532253 - 2⁴ = 135532237 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 (135532213) 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, 204401 + ... + 205062.

It is an arithmetic number, because the mean of its divisors is an integer number (33985512).

Almost surely, 2^135532253 is an apocalyptic number.

It is an amenable number.

135532253 is a deficient number, since it is larger than the sum of its proper divisors (409795).

135532253 is an equidigital number, since it uses as much as digits as its factorization.

135532253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409794.

The product of its digits is 13500, while the sum is 29.

The square root of 135532253 is about 11641.8320293672. The cubic root of 135532253 is about 513.6660775810. Note that the first 3 decimals are identical.

Adding to 135532253 its reverse (352235531), we get a palindrome (487767784).

The spelling of 135532253 in words is "one hundred thirty-five million, five hundred thirty-two thousand, two hundred fifty-three".