405505133 has 12 divisors (see below), whose sum is σ = 446473248. Its totient is φ = 365252160.

The previous prime is 405505127. The next prime is 405505151. The reversal of 405505133 is 331505504.

It is not a de Polignac number, because 405505133 - 2⁸ = 405504877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405505103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139016 + ... + 141902.

It is an arithmetic number, because the mean of its divisors is an integer number (37206104).

Almost surely, 2^405505133 is an apocalyptic number.

It is an amenable number.

405505133 is a deficient number, since it is larger than the sum of its proper divisors (40968115).

405505133 is a wasteful number, since it uses less digits than its factorization.

405505133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124 (or 3011 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 405505133 is about 20137.1580169596. The cubic root of 405505133 is about 740.1710908272.

The spelling of 405505133 in words is "four hundred five million, five hundred five thousand, one hundred thirty-three".