135555597 has 6 divisors (see below), whose sum is σ = 195802542. Its totient is φ = 90370392.

The previous prime is 135555587. The next prime is 135555601. The reversal of 135555597 is 795555531.

135555597 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 55 + 597 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134235396 + 1320201 = 11586^2 + 1149^2 .

It is not a de Polignac number, because 135555597 - 2⁶ = 135555533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135555577) 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, 7530858 + ... + 7530875.

It is an arithmetic number, because the mean of its divisors is an integer number (32633757).

Almost surely, 2^135555597 is an apocalyptic number.

It is an amenable number.

135555597 is a deficient number, since it is larger than the sum of its proper divisors (60246945).

135555597 is a wasteful number, since it uses less digits than its factorization.

135555597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061739 (or 15061736 counting only the distinct ones).

The product of its digits is 590625, while the sum is 45.

The square root of 135555597 is about 11642.8345775417. The cubic root of 135555597 is about 513.6955670747.

The spelling of 135555597 in words is "one hundred thirty-five million, five hundred fifty-five thousand, five hundred ninety-seven".