1445127217 has 16 divisors (see below), whose sum is σ = 1545868800. Its totient is φ = 1347937920.

The previous prime is 1445127169. The next prime is 1445127223. The reversal of 1445127217 is 7127215441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445127217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445127227) 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 in 15 ways as a sum of consecutive naturals, for example, 726298 + ... + 728284.

It is an arithmetic number, because the mean of its divisors is an integer number (96616800).

Almost surely, 2^1445127217 is an apocalyptic number.

It is an amenable number.

1445127217 is a deficient number, since it is larger than the sum of its proper divisors (100741583).

1445127217 is a wasteful number, since it uses less digits than its factorization.

1445127217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its digits is 15680, while the sum is 34.

The square root of 1445127217 is about 38014.8289092559. The cubic root of 1445127217 is about 1130.5818959822.

The spelling of 1445127217 in words is "one billion, four hundred forty-five million, one hundred twenty-seven thousand, two hundred seventeen".