445110721 has 6 divisors (see below), whose sum is σ = 489254066. Its totient is φ = 404646000.

The previous prime is 445110709. The next prime is 445110733. The reversal of 445110721 is 127011544.

It is an interprime number because it is at equal distance from previous prime (445110709) and next prime (445110733).

It can be written as a sum of positive squares in only one way, i.e., 411887025 + 33223696 = 20295^2 + 5764^2 .

It is not a de Polignac number, because 445110721 - 2¹³ = 445102529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445110781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1839180 + ... + 1839421.

Almost surely, 2^445110721 is an apocalyptic number.

It is an amenable number.

445110721 is a deficient number, since it is larger than the sum of its proper divisors (44143345).

445110721 is a wasteful number, since it uses less digits than its factorization.

445110721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678623 (or 3678612 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 445110721 is about 21097.6472858942. The cubic root of 445110721 is about 763.5239860963.

The spelling of 445110721 in words is "four hundred forty-five million, one hundred ten thousand, seven hundred twenty-one".