6451223 has 2 divisors, whose sum is σ = 6451224. Its totient is φ = 6451222.

The previous prime is 6451217. The next prime is 6451231. The reversal of 6451223 is 3221546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6451223 - 2²⁰ = 5402647 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225611 + 3225612.

It is an arithmetic number, because the mean of its divisors is an integer number (3225612).

Almost surely, 2^6451223 is an apocalyptic number.

6451223 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451223 is an equidigital number, since it uses as much as digits as its factorization.

6451223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 6451223 is about 2539.9257863174. The cubic root of 6451223 is about 186.1575629469.

Adding to 6451223 its reverse (3221546), we get a palindrome (9672769).

The spelling of 6451223 in words is "six million, four hundred fifty-one thousand, two hundred twenty-three".