135602551 has 12 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 115614240.

The previous prime is 135602543. The next prime is 135602581. The reversal of 135602551 is 155206531.

It is not a de Polignac number, because 135602551 - 2³ = 135602543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135602581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2115 + ... + 16603.

It is an arithmetic number, because the mean of its divisors is an integer number (13214880).

Almost surely, 2^135602551 is an apocalyptic number.

135602551 is a deficient number, since it is larger than the sum of its proper divisors (22976009).

135602551 is a wasteful number, since it uses less digits than its factorization.

135602551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14694 (or 14687 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 135602551 is about 11644.8508363139. The cubic root of 135602551 is about 513.7548718367.

The spelling of 135602551 in words is "one hundred thirty-five million, six hundred two thousand, five hundred fifty-one".