2145044227 has 2 divisors, whose sum is σ = 2145044228. Its totient is φ = 2145044226.

The previous prime is 2145044221. The next prime is 2145044339. The reversal of 2145044227 is 7224405412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145044227 - 2³ = 2145044219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145044221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072522113 + 1072522114.

It is an arithmetic number, because the mean of its divisors is an integer number (1072522114).

Almost surely, 2^2145044227 is an apocalyptic number.

2145044227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145044227 is an equidigital number, since it uses as much as digits as its factorization.

2145044227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 2145044227 is about 46314.6221727005. The cubic root of 2145044227 is about 1289.6704538492.

Adding to 2145044227 its reverse (7224405412), we get a palindrome (9369449639).

The spelling of 2145044227 in words is "two billion, one hundred forty-five million, forty-four thousand, two hundred twenty-seven".