133504455 has 16 divisors (see below), whose sum is σ = 244122624. Its totient is φ = 61030560.

The previous prime is 133504453. The next prime is 133504463. The reversal of 133504455 is 554405331.

It is not a de Polignac number, because 133504455 - 2¹ = 133504453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133504453) 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, 635631 + ... + 635840.

It is an arithmetic number, because the mean of its divisors is an integer number (15257664).

Almost surely, 2^133504455 is an apocalyptic number.

133504455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133504455 is a deficient number, since it is larger than the sum of its proper divisors (110618169).

133504455 is a wasteful number, since it uses less digits than its factorization.

133504455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271486.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 133504455 is about 11554.4127933876. The cubic root of 133504455 is about 511.0914150763.

Adding to 133504455 its reverse (554405331), we get a palindrome (687909786).

The spelling of 133504455 in words is "one hundred thirty-three million, five hundred four thousand, four hundred fifty-five".