133504401 has 16 divisors (see below), whose sum is σ = 181378304. Its totient is φ = 87327504.

The previous prime is 133504381. The next prime is 133504439. The reversal of 133504401 is 104405331.

It is not a de Polignac number, because 133504401 - 2¹¹ = 133502353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133504471) 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, 55710 + ... + 58056.

It is an arithmetic number, because the mean of its divisors is an integer number (11336144).

Almost surely, 2^133504401 is an apocalyptic number.

It is an amenable number.

133504401 is a deficient number, since it is larger than the sum of its proper divisors (47873903).

133504401 is a wasteful number, since it uses less digits than its factorization.

133504401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 133504401 is about 11554.4104566179. The cubic root of 133504401 is about 511.0913461674.

Adding to 133504401 its reverse (104405331), we get a palindrome (237909732).

The spelling of 133504401 in words is "one hundred thirty-three million, five hundred four thousand, four hundred one".