55334209 has 4 divisors (see below), whose sum is σ = 63239104. Its totient is φ = 47429316.

The previous prime is 55334197. The next prime is 55334231. The reversal of 55334209 is 90243355.

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 a de Polignac number, because none of the positive numbers 2^k-55334209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55334009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952437 + ... + 3952450.

It is an arithmetic number, because the mean of its divisors is an integer number (15809776).

Almost surely, 2^55334209 is an apocalyptic number.

It is an amenable number.

55334209 is a deficient number, since it is larger than the sum of its proper divisors (7904895).

55334209 is an equidigital number, since it uses as much as digits as its factorization.

55334209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904894.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 55334209 is about 7438.6967272500. The cubic root of 55334209 is about 381.0639825678.

The spelling of 55334209 in words is "fifty-five million, three hundred thirty-four thousand, two hundred nine".