15227397 has 6 divisors (see below), whose sum is σ = 21995142. Its totient is φ = 10151592.

The previous prime is 15227363. The next prime is 15227411. The reversal of 15227397 is 79372251.

It can be written as a sum of positive squares in only one way, i.e., 8678916 + 6548481 = 2946^2 + 2559^2 .

It is not a de Polignac number, because 15227397 - 2⁷ = 15227269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15227347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845958 + ... + 845975.

It is an arithmetic number, because the mean of its divisors is an integer number (3665857).

Almost surely, 2^15227397 is an apocalyptic number.

It is an amenable number.

15227397 is a deficient number, since it is larger than the sum of its proper divisors (6767745).

15227397 is a wasteful number, since it uses less digits than its factorization.

15227397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691939 (or 1691936 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 15227397 is about 3902.2297472086. The cubic root of 15227397 is about 247.8612050719.

The spelling of 15227397 in words is "fifteen million, two hundred twenty-seven thousand, three hundred ninety-seven".