55444223 has 4 divisors (see below), whose sum is σ = 58362360. Its totient is φ = 52526088.

The previous prime is 55444217. The next prime is 55444273. The reversal of 55444223 is 32244455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55444223 - 2⁶ = 55444159 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 (55444273) 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, 1459040 + ... + 1459077.

It is an arithmetic number, because the mean of its divisors is an integer number (14590590).

Almost surely, 2^55444223 is an apocalyptic number.

55444223 is a deficient number, since it is larger than the sum of its proper divisors (2918137).

55444223 is a wasteful number, since it uses less digits than its factorization.

55444223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918136.

The product of its digits is 19200, while the sum is 29.

The square root of 55444223 is about 7446.0877647258. The cubic root of 55444223 is about 381.3163558067.

Adding to 55444223 its reverse (32244455), we get a palindrome (87688678).

The spelling of 55444223 in words is "fifty-five million, four hundred forty-four thousand, two hundred twenty-three".