1445212247 has 2 divisors, whose sum is σ = 1445212248. Its totient is φ = 1445212246.

The previous prime is 1445212229. The next prime is 1445212253. The reversal of 1445212247 is 7422125441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1445212247 - 2¹⁶ = 1445146711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445212297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722606123 + 722606124.

It is an arithmetic number, because the mean of its divisors is an integer number (722606124).

Almost surely, 2^1445212247 is an apocalyptic number.

1445212247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445212247 is an equidigital number, since it uses as much as digits as its factorization.

1445212247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 32.

The square root of 1445212247 is about 38015.9472721646. The cubic root of 1445212247 is about 1130.6040696917.

Adding to 1445212247 its reverse (7422125441), we get a palindrome (8867337688).

The spelling of 1445212247 in words is "one billion, four hundred forty-five million, two hundred twelve thousand, two hundred forty-seven".