135671556 has 12 divisors (see below), whose sum is σ = 316566992. Its totient is φ = 45223848.

The previous prime is 135671521. The next prime is 135671561. The reversal of 135671556 is 655176531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×135671556² = 36813542214922272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5652970 + ... + 5652993.

Almost surely, 2^135671556 is an apocalyptic number.

It is an amenable number.

135671556 is an abundant number, since it is smaller than the sum of its proper divisors (180895436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135671556 is a wasteful number, since it uses less digits than its factorization.

135671556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11305970 (or 11305968 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 135671556 is about 11647.8133570211. The cubic root of 135671556 is about 513.8420030469.

The spelling of 135671556 in words is "one hundred thirty-five million, six hundred seventy-one thousand, five hundred fifty-six".