133004401 has 4 divisors (see below), whose sum is σ = 135513972. Its totient is φ = 130494832.

The previous prime is 133004393. The next prime is 133004419. The reversal of 133004401 is 104400331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113635600 + 19368801 = 10660^2 + 4401^2 .

It is a cyclic number.

It is not a de Polignac number, because 133004401 - 2³ = 133004393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133004471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254706 + ... + 1254811.

It is an arithmetic number, because the mean of its divisors is an integer number (33878493).

Almost surely, 2^133004401 is an apocalyptic number.

It is an amenable number.

133004401 is a deficient number, since it is larger than the sum of its proper divisors (2509571).

133004401 is an equidigital number, since it uses as much as digits as its factorization.

133004401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509570.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 133004401 is about 11532.7534006411. The cubic root of 133004401 is about 510.4525024054.

Adding to 133004401 its reverse (104400331), we get a palindrome (237404732).

The spelling of 133004401 in words is "one hundred thirty-three million, four thousand, four hundred one".