135250817 has 16 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 122808000.

The previous prime is 135250807. The next prime is 135250831. The reversal of 135250817 is 718052531.

It is a cyclic number.

It is not a de Polignac number, because 135250817 - 2⁸ = 135250561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135250807) 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 15 ways as a sum of consecutive naturals, for example, 313592 + ... + 314022.

It is an arithmetic number, because the mean of its divisors is an integer number (9253440).

Almost surely, 2^135250817 is an apocalyptic number.

It is an amenable number.

135250817 is a deficient number, since it is larger than the sum of its proper divisors (12804223).

135250817 is a wasteful number, since it uses less digits than its factorization.

135250817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 135250817 is about 11629.7384751335. The cubic root of 135250817 is about 513.3102845201.

The spelling of 135250817 in words is "one hundred thirty-five million, two hundred fifty thousand, eight hundred seventeen".