5551223 has 4 divisors (see below), whose sum is σ = 5556000. Its totient is φ = 5546448.

The previous prime is 5551193. The next prime is 5551237. The reversal of 5551223 is 3221555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5551223 - 2⁶ = 5551159 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 (5551283) 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, 611 + ... + 3387.

It is an arithmetic number, because the mean of its divisors is an integer number (1389000).

Almost surely, 2^5551223 is an apocalyptic number.

5551223 is a deficient number, since it is larger than the sum of its proper divisors (4777).

5551223 is a wasteful number, since it uses less digits than its factorization.

5551223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776.

The product of its digits is 1500, while the sum is 23.

The square root of 5551223 is about 2356.1033508741. The cubic root of 5551223 is about 177.0637092840.

Adding to 5551223 its reverse (3221555), we get a palindrome (8772778).

The spelling of 5551223 in words is "five million, five hundred fifty-one thousand, two hundred twenty-three".