15226397 has 2 divisors, whose sum is σ = 15226398. Its totient is φ = 15226396.

The previous prime is 15226361. The next prime is 15226399. The reversal of 15226397 is 79362251.

15226397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10621081 + 4605316 = 3259^2 + 2146^2 .

It is a cyclic number.

It is not a de Polignac number, because 15226397 - 2¹⁰ = 15225373 is a prime.

Together with 15226399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15226399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7613198 + 7613199.

It is an arithmetic number, because the mean of its divisors is an integer number (7613199).

Almost surely, 2^15226397 is an apocalyptic number.

It is an amenable number.

15226397 is a deficient number, since it is larger than the sum of its proper divisors (1).

15226397 is an equidigital number, since it uses as much as digits as its factorization.

15226397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 15226397 is about 3902.1016132336. The cubic root of 15226397 is about 247.8557791800.

The spelling of 15226397 in words is "fifteen million, two hundred twenty-six thousand, three hundred ninety-seven".