1445272223 has 2 divisors, whose sum is σ = 1445272224. Its totient is φ = 1445272222.

The previous prime is 1445272193. The next prime is 1445272243. The reversal of 1445272223 is 3222725441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1445272223 - 2¹⁰ = 1445271199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445272223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445272243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722636111 + 722636112.

It is an arithmetic number, because the mean of its divisors is an integer number (722636112).

Almost surely, 2^1445272223 is an apocalyptic number.

1445272223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445272223 is an equidigital number, since it uses as much as digits as its factorization.

1445272223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 32.

The square root of 1445272223 is about 38016.7360908324. The cubic root of 1445272223 is about 1130.6197094179.

Adding to 1445272223 its reverse (3222725441), we get a palindrome (4667997664).

The spelling of 1445272223 in words is "one billion, four hundred forty-five million, two hundred seventy-two thousand, two hundred twenty-three".