135652251 has 8 divisors (see below), whose sum is σ = 206708224. Its totient is φ = 77515560.

The previous prime is 135652219. The next prime is 135652259. The reversal of 135652251 is 152256531.

It is a happy number.

135652251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135652251 - 2⁵ = 135652219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135652259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3229795 + ... + 3229836.

It is an arithmetic number, because the mean of its divisors is an integer number (25838528).

Almost surely, 2^135652251 is an apocalyptic number.

135652251 is a deficient number, since it is larger than the sum of its proper divisors (71055973).

135652251 is an equidigital number, since it uses as much as digits as its factorization.

135652251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459641.

The product of its digits is 9000, while the sum is 30.

The square root of 135652251 is about 11646.9846312254. The cubic root of 135652251 is about 513.8176299931.

The spelling of 135652251 in words is "one hundred thirty-five million, six hundred fifty-two thousand, two hundred fifty-one".