133155560 has 32 divisors (see below), whose sum is σ = 317225160. Its totient is φ = 50128896.

The previous prime is 133155551. The next prime is 133155623. The reversal of 133155560 is 65551331.

It can be written as a sum of positive squares in 4 ways, for example, as 121308196 + 11847364 = 11014^2 + 3442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97229 + ... + 98588.

Almost surely, 2^133155560 is an apocalyptic number.

133155560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133155560 is an abundant number, since it is smaller than the sum of its proper divisors (184069600).

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

133155560 is a wasteful number, since it uses less digits than its factorization.

133155560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195845 (or 195841 counting only the distinct ones).

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

The square root of 133155560 is about 11539.3050050685. The cubic root of 133155560 is about 510.6458049758.

The spelling of 133155560 in words is "one hundred thirty-three million, one hundred fifty-five thousand, five hundred sixty".