8224261 has 2 divisors, whose sum is σ = 8224262. Its totient is φ = 8224260.

The previous prime is 8224259. The next prime is 8224289. The reversal of 8224261 is 1624228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 101761 = 2850^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 8224261 - 2¹ = 8224259 is a prime.

It is a super-2 number, since 2×8224261² = 135276937992242, which contains 22 as substring.

Together with 8224259, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8224211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112130 + 4112131.

It is an arithmetic number, because the mean of its divisors is an integer number (4112131).

Almost surely, 2^8224261 is an apocalyptic number.

It is an amenable number.

8224261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8224261 is an equidigital number, since it uses as much as digits as its factorization.

8224261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

The square root of 8224261 is about 2867.7972382998. The cubic root of 8224261 is about 201.8516458013.

Adding to 8224261 its reverse (1624228), we get a palindrome (9848489).

The spelling of 8224261 in words is "eight million, two hundred twenty-four thousand, two hundred sixty-one".