815455133 has 16 divisors (see below), whose sum is σ = 902918016. Its totient is φ = 732526080.

The previous prime is 815455127. The next prime is 815455141. The reversal of 815455133 is 331554518.

It is not a de Polignac number, because 815455133 - 2¹⁴ = 815438749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 815455093 and 815455102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815455103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201710 + ... + 205712.

It is an arithmetic number, because the mean of its divisors is an integer number (56432376).

Almost surely, 2^815455133 is an apocalyptic number.

It is an amenable number.

815455133 is a deficient number, since it is larger than the sum of its proper divisors (87462883).

815455133 is a wasteful number, since it uses less digits than its factorization.

815455133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564.

The product of its digits is 36000, while the sum is 35.

The square root of 815455133 is about 28556.1750414862. The cubic root of 815455133 is about 934.2577093490.

The spelling of 815455133 in words is "eight hundred fifteen million, four hundred fifty-five thousand, one hundred thirty-three".