55076809 has 4 divisors (see below), whose sum is σ = 56248704. Its totient is φ = 53904916.

The previous prime is 55076803. The next prime is 55076873. The reversal of 55076809 is 90867055.

It is a happy number.

55076809 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 55076809 - 2⁹ = 55076297 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55076803) 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, 585877 + ... + 585970.

It is an arithmetic number, because the mean of its divisors is an integer number (14062176).

Almost surely, 2^55076809 is an apocalyptic number.

It is an amenable number.

55076809 is a deficient number, since it is larger than the sum of its proper divisors (1171895).

55076809 is a wasteful number, since it uses less digits than its factorization.

55076809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171894.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 55076809 is about 7421.3751421148. The cubic root of 55076809 is about 380.4721946248.

The spelling of 55076809 in words is "fifty-five million, seventy-six thousand, eight hundred nine".