1445621071 has 2 divisors, whose sum is σ = 1445621072. Its totient is φ = 1445621070.

The previous prime is 1445621063. The next prime is 1445621081. The reversal of 1445621071 is 1701265441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1445621071 - 2³ = 1445621063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445621041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722810535 + 722810536.

It is an arithmetic number, because the mean of its divisors is an integer number (722810536).

Almost surely, 2^1445621071 is an apocalyptic number.

1445621071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445621071 is an equidigital number, since it uses as much as digits as its factorization.

1445621071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1445621071 is about 38021.3238985704. The cubic root of 1445621071 is about 1130.7106686824.

The spelling of 1445621071 in words is "one billion, four hundred forty-five million, six hundred twenty-one thousand, seventy-one".