133181560 has 16 divisors (see below), whose sum is σ = 299658600. Its totient is φ = 53272608.

The previous prime is 133181533. The next prime is 133181563. The reversal of 133181560 is 65181331.

133181560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133181563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664730 + ... + 1664809.

Almost surely, 2^133181560 is an apocalyptic number.

133181560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133181560 is an abundant number, since it is smaller than the sum of its proper divisors (166477040).

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

133181560 is a wasteful number, since it uses less digits than its factorization.

133181560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329550 (or 3329546 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 133181560 is about 11540.4315343925. The cubic root of 133181560 is about 510.6790391041.

It can be divided in two parts, 13318 and 1560, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 133181560 in words is "one hundred thirty-three million, one hundred eighty-one thousand, five hundred sixty".