135145657 has 4 divisors (see below), whose sum is σ = 135711360. Its totient is φ = 134579956.

The previous prime is 135145639. The next prime is 135145739. The reversal of 135145657 is 756541531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135145657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135145607) 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, 282493 + ... + 282970.

It is an arithmetic number, because the mean of its divisors is an integer number (33927840).

Almost surely, 2^135145657 is an apocalyptic number.

It is an amenable number.

135145657 is a deficient number, since it is larger than the sum of its proper divisors (565703).

135145657 is an equidigital number, since it uses as much as digits as its factorization.

135145657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565702.

The product of its digits is 63000, while the sum is 37.

The square root of 135145657 is about 11625.2164280929. The cubic root of 135145657 is about 513.1772139607.

The spelling of 135145657 in words is "one hundred thirty-five million, one hundred forty-five thousand, six hundred fifty-seven".