2551223 has 2 divisors, whose sum is σ = 2551224. Its totient is φ = 2551222.

The previous prime is 2551177. The next prime is 2551247. The reversal of 2551223 is 3221552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2551223 - 2⁸ = 2550967 is a prime.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 2551195 and 2551204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275611 + 1275612.

It is an arithmetic number, because the mean of its divisors is an integer number (1275612).

2^2551223 is an apocalyptic number.

2551223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551223 is an equidigital number, since it uses as much as digits as its factorization.

2551223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 20.

The square root of 2551223 is about 1597.2548325173. The cubic root of 2551223 is about 136.6415586104.

Adding to 2551223 its reverse (3221552), we get a palindrome (5772775).

The spelling of 2551223 in words is "two million, five hundred fifty-one thousand, two hundred twenty-three".