54808409 has 4 divisors (see below), whose sum is σ = 54827904. Its totient is φ = 54788916.

The previous prime is 54808399. The next prime is 54808417. The reversal of 54808409 is 90480845.

54808409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54808409 - 2⁴ = 54808393 is a prime.

It is a super-2 number, since 2×54808409² = 6007923394222562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54808489) 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 3 ways as a sum of consecutive naturals, for example, 4637 + ... + 11450.

It is an arithmetic number, because the mean of its divisors is an integer number (13706976).

Almost surely, 2^54808409 is an apocalyptic number.

It is an amenable number.

54808409 is a deficient number, since it is larger than the sum of its proper divisors (19495).

54808409 is a wasteful number, since it uses less digits than its factorization.

54808409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19494.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 54808409 is about 7403.2701558163. The cubic root of 54808409 is about 379.8531496284.

The spelling of 54808409 in words is "fifty-four million, eight hundred eight thousand, four hundred nine".