20150227 has 2 divisors, whose sum is σ = 20150228. Its totient is φ = 20150226.

The previous prime is 20150197. The next prime is 20150233. The reversal of 20150227 is 72205102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20150227 is a prime.

It is not a weakly prime, because it can be changed into another prime (20150257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075113 + 10075114.

It is an arithmetic number, because the mean of its divisors is an integer number (10075114).

Almost surely, 2^20150227 is an apocalyptic number.

20150227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150227 is an equidigital number, since it uses as much as digits as its factorization.

20150227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20150227 is about 4488.9004221524. The cubic root of 20150227 is about 272.1196984342.

Adding to 20150227 its reverse (72205102), we get a palindrome (92355329).

The spelling of 20150227 in words is "twenty million, one hundred fifty thousand, two hundred twenty-seven".