133505156 has 12 divisors (see below), whose sum is σ = 243792192. Its totient is φ = 63850248.

The previous prime is 133505137. The next prime is 133505167. The reversal of 133505156 is 651505331.

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, 725480 + ... + 725663.

It is an arithmetic number, because the mean of its divisors is an integer number (20316016).

Almost surely, 2^133505156 is an apocalyptic number.

It is an amenable number.

133505156 is a deficient number, since it is larger than the sum of its proper divisors (110287036).

133505156 is a wasteful number, since it uses less digits than its factorization.

133505156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451170 (or 1451168 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 133505156 is about 11554.4431280785. The cubic root of 133505156 is about 511.0923096143.

The spelling of 133505156 in words is "one hundred thirty-three million, five hundred five thousand, one hundred fifty-six".