54533409 has 16 divisors (see below), whose sum is σ = 84239232. Its totient is φ = 30734208.

The previous prime is 54533387. The next prime is 54533429. The reversal of 54533409 is 90433545.

It is not a de Polignac number, because 54533409 - 2¹¹ = 54531361 is a prime.

It is a super-2 number, since 2×54533409² = 5947785394322562, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54533409.

It is not an unprimeable number, because it can be changed into a prime (54533429) 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, 16254 + ... + 19319.

It is an arithmetic number, because the mean of its divisors is an integer number (5264952).

Almost surely, 2^54533409 is an apocalyptic number.

It is an amenable number.

54533409 is a deficient number, since it is larger than the sum of its proper divisors (29705823).

54533409 is a wasteful number, since it uses less digits than its factorization.

54533409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35656.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 54533409 is about 7384.6739264506. The cubic root of 54533409 is about 379.2167824806.

The spelling of 54533409 in words is "fifty-four million, five hundred thirty-three thousand, four hundred nine".