133161087 has 8 divisors (see below), whose sum is σ = 177602560. Its totient is φ = 88746840.

The previous prime is 133161079. The next prime is 133161097. The reversal of 133161087 is 780161331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133161087 - 2³ = 133161079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133161047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12162 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (22200320).

Almost surely, 2^133161087 is an apocalyptic number.

133161087 is a deficient number, since it is larger than the sum of its proper divisors (44441473).

133161087 is an equidigital number, since it uses as much as digits as its factorization.

133161087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13613.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 133161087 is about 11539.5444884103. The cubic root of 133161087 is about 510.6528701466.

The spelling of 133161087 in words is "one hundred thirty-three million, one hundred sixty-one thousand, eighty-seven".