7223261 has 2 divisors, whose sum is σ = 7223262. Its totient is φ = 7223260.

The previous prime is 7223243. The next prime is 7223267. The reversal of 7223261 is 1623227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4644025 + 2579236 = 2155^2 + 1606^2 .

It is a cyclic number.

It is not a de Polignac number, because 7223261 - 2⁶ = 7223197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7223267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611630 + 3611631.

It is an arithmetic number, because the mean of its divisors is an integer number (3611631).

Almost surely, 2^7223261 is an apocalyptic number.

It is an amenable number.

7223261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7223261 is an equidigital number, since it uses as much as digits as its factorization.

7223261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 7223261 is about 2687.6125092729. The cubic root of 7223261 is about 193.3056001308.

Adding to 7223261 its reverse (1623227), we get a palindrome (8846488).

The spelling of 7223261 in words is "seven million, two hundred twenty-three thousand, two hundred sixty-one".