133164401 has 2 divisors, whose sum is σ = 133164402. Its totient is φ = 133164400.

The previous prime is 133164397. The next prime is 133164439. The reversal of 133164401 is 104461331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112869376 + 20295025 = 10624^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 133164401 - 2² = 133164397 is a prime.

It is not a weakly prime, because it can be changed into another prime (133154401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66582200 + 66582201.

It is an arithmetic number, because the mean of its divisors is an integer number (66582201).

Almost surely, 2^133164401 is an apocalyptic number.

It is an amenable number.

133164401 is a deficient number, since it is larger than the sum of its proper divisors (1).

133164401 is an equidigital number, since it uses as much as digits as its factorization.

133164401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 133164401 is about 11539.6880807065. The cubic root of 133164401 is about 510.6571063431.

The spelling of 133164401 in words is "one hundred thirty-three million, one hundred sixty-four thousand, four hundred one".