135453251 has 4 divisors (see below), whose sum is σ = 135889104. Its totient is φ = 135017400.

The previous prime is 135453239. The next prime is 135453257. The reversal of 135453251 is 152354531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152354531 = 7 ⋅21764933.

It is a cyclic number.

It is not a de Polignac number, because 135453251 - 2¹⁴ = 135436867 is a prime.

It is a Duffinian 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, 217460 + ... + 218081.

It is an arithmetic number, because the mean of its divisors is an integer number (33972276).

Almost surely, 2^135453251 is an apocalyptic number.

135453251 is a deficient number, since it is larger than the sum of its proper divisors (435853).

135453251 is an equidigital number, since it uses as much as digits as its factorization.

135453251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435852.

The product of its digits is 9000, while the sum is 29.

The square root of 135453251 is about 11638.4385121029. The cubic root of 135453251 is about 513.5662525481.

The spelling of 135453251 in words is "one hundred thirty-five million, four hundred fifty-three thousand, two hundred fifty-one".