133164564 has 48 divisors (see below), whose sum is σ = 336665280. Its totient is φ = 40965600.

The previous prime is 133164541. The next prime is 133164569. The reversal of 133164564 is 465461331.

It is a super-2 number, since 2×133164564² = 35465602210620192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133164569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23839 + ... + 28889.

It is an arithmetic number, because the mean of its divisors is an integer number (7013860).

Almost surely, 2^133164564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133164564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168332640).

133164564 is an abundant number, since it is smaller than the sum of its proper divisors (203500716).

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

133164564 is a wasteful number, since it uses less digits than its factorization.

133164564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097 (or 5069 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 133164564 is about 11539.6951432869. The cubic root of 133164564 is about 510.6573146997.

The spelling of 133164564 in words is "one hundred thirty-three million, one hundred sixty-four thousand, five hundred sixty-four".