55000223 has 4 divisors (see below), whose sum is σ = 55901928. Its totient is φ = 54098520.

The previous prime is 55000207. The next prime is 55000243. The reversal of 55000223 is 32200055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32200055 = 5 ⋅6440011.

It is a cyclic number.

It is not a de Polignac number, because 55000223 - 2⁴ = 55000207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450761 + ... + 450882.

It is an arithmetic number, because the mean of its divisors is an integer number (13975482).

Almost surely, 2^55000223 is an apocalyptic number.

55000223 is a deficient number, since it is larger than the sum of its proper divisors (901705).

55000223 is an equidigital number, since it uses as much as digits as its factorization.

55000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901704.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55000223 is about 7416.2135217374. The cubic root of 55000223 is about 380.2957600502.

Adding to 55000223 its reverse (32200055), we get a palindrome (87200278).

The spelling of 55000223 in words is "fifty-five million, two hundred twenty-three", and thus it is an aban number.