135252445 has 4 divisors (see below), whose sum is σ = 162302940. Its totient is φ = 108201952.

The previous prime is 135252437. The next prime is 135252451. The reversal of 135252445 is 544252531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544252531 = 127 ⋅4285453.

It can be written as a sum of positive squares in 2 ways, for example, as 97871449 + 37380996 = 9893^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 135252445 - 2³ = 135252437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13525240 + ... + 13525249.

It is an arithmetic number, because the mean of its divisors is an integer number (40575735).

Almost surely, 2^135252445 is an apocalyptic number.

It is an amenable number.

135252445 is a deficient number, since it is larger than the sum of its proper divisors (27050495).

135252445 is an equidigital number, since it uses as much as digits as its factorization.

135252445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050494.

The product of its digits is 24000, while the sum is 31.

The square root of 135252445 is about 11629.8084678983. The cubic root of 135252445 is about 513.3123440660.

It can be divided in two parts, 1352524 and 45, that added together give a square (1352569 = 1163²).

The spelling of 135252445 in words is "one hundred thirty-five million, two hundred fifty-two thousand, four hundred forty-five".