1445621297 has 2 divisors, whose sum is σ = 1445621298. Its totient is φ = 1445621296.

The previous prime is 1445621207. The next prime is 1445621381. The reversal of 1445621297 is 7921265441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1037419681 + 408201616 = 32209^2 + 20204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445621297 - 2⁸ = 1445621041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1445621207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722810648 + 722810649.

It is an arithmetic number, because the mean of its divisors is an integer number (722810649).

Almost surely, 2^1445621297 is an apocalyptic number.

It is an amenable number.

1445621297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445621297 is an equidigital number, since it uses as much as digits as its factorization.

1445621297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 1445621297 is about 38021.3268705867. The cubic root of 1445621297 is about 1130.7107276053.

It can be divided in two parts, 14456 and 21297, that added together give a palindrome (35753).

The spelling of 1445621297 in words is "one billion, four hundred forty-five million, six hundred twenty-one thousand, two hundred ninety-seven".