135507589 has 6 divisors (see below), whose sum is σ = 157631334. Its totient is φ = 116149320.

The previous prime is 135507571. The next prime is 135507607. The reversal of 135507589 is 985705531.

It is an interprime number because it is at equal distance from previous prime (135507571) and next prime (135507607).

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 64240225 = 8442^2 + 8015^2 .

It is not a de Polignac number, because 135507589 - 2⁷ = 135507461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135507529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1382682 + ... + 1382779.

It is an arithmetic number, because the mean of its divisors is an integer number (26271889).

Almost surely, 2^135507589 is an apocalyptic number.

It is an amenable number.

135507589 is a deficient number, since it is larger than the sum of its proper divisors (22123745).

135507589 is an equidigital number, since it uses as much as digits as its factorization.

135507589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765475 (or 2765468 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 43.

The square root of 135507589 is about 11640.7726977207. The cubic root of 135507589 is about 513.6349169079.

The spelling of 135507589 in words is "one hundred thirty-five million, five hundred seven thousand, five hundred eighty-nine".