15120227 has 2 divisors, whose sum is σ = 15120228. Its totient is φ = 15120226.

The previous prime is 15120187. The next prime is 15120233. The reversal of 15120227 is 72202151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15120227 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15120199 and 15120208.

It is not a weakly prime, because it can be changed into another prime (15120527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560113 + 7560114.

It is an arithmetic number, because the mean of its divisors is an integer number (7560114).

Almost surely, 2^15120227 is an apocalyptic number.

15120227 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120227 is an equidigital number, since it uses as much as digits as its factorization.

15120227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 15120227 is about 3888.4736079855. The cubic root of 15120227 is about 247.2783554582.

Adding to 15120227 its reverse (72202151), we get a palindrome (87322378).

The spelling of 15120227 in words is "fifteen million, one hundred twenty thousand, two hundred twenty-seven".