55104213 has 4 divisors (see below), whose sum is σ = 73472288. Its totient is φ = 36736140.

The previous prime is 55104209. The next prime is 55104221. The reversal of 55104213 is 31240155.

55104213 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 not a de Polignac number, because 55104213 - 2² = 55104209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55104213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55104253) 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, 9184033 + ... + 9184038.

It is an arithmetic number, because the mean of its divisors is an integer number (18368072).

Almost surely, 2^55104213 is an apocalyptic number.

It is an amenable number.

55104213 is a deficient number, since it is larger than the sum of its proper divisors (18368075).

55104213 is a wasteful number, since it uses less digits than its factorization.

55104213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18368074.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55104213 is about 7423.2212010690. The cubic root of 55104213 is about 380.5352867043.

Adding to 55104213 its reverse (31240155), we get a palindrome (86344368).

The spelling of 55104213 in words is "fifty-five million, one hundred four thousand, two hundred thirteen".