1521227 has 2 divisors, whose sum is σ = 1521228. Its totient is φ = 1521226.

The previous prime is 1521217. The next prime is 1521229. The reversal of 1521227 is 7221251.

It is a strong prime.

It is an emirp because it is prime and its reverse (7221251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1521227 - 2⁸ = 1520971 is a prime.

Together with 1521229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1521199 and 1521208.

It is not a weakly prime, because it can be changed into another prime (1521229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760613 + 760614.

It is an arithmetic number, because the mean of its divisors is an integer number (760614).

2^1521227 is an apocalyptic number.

1521227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521227 is an equidigital number, since it uses as much as digits as its factorization.

1521227 is an evil number, because the sum of its binary digits is even.

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

The square root of 1521227 is about 1233.3803144205. The cubic root of 1521227 is about 115.0088714013.

Adding to 1521227 its reverse (7221251), we get a palindrome (8742478).

The spelling of 1521227 in words is "one million, five hundred twenty-one thousand, two hundred twenty-seven".