135251147 has 4 divisors (see below), whose sum is σ = 136006920. Its totient is φ = 134495376.

The previous prime is 135251131. The next prime is 135251161. The reversal of 135251147 is 741152531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135251147 - 2⁴ = 135251131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135251117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377618 + ... + 377975.

It is an arithmetic number, because the mean of its divisors is an integer number (34001730).

Almost surely, 2^135251147 is an apocalyptic number.

135251147 is a deficient number, since it is larger than the sum of its proper divisors (755773).

135251147 is an equidigital number, since it uses as much as digits as its factorization.

135251147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755772.

The product of its digits is 4200, while the sum is 29.

The square root of 135251147 is about 11629.7526628901. The cubic root of 135251147 is about 513.3107019970.

The spelling of 135251147 in words is "one hundred thirty-five million, two hundred fifty-one thousand, one hundred forty-seven".