445220481 has 16 divisors (see below), whose sum is σ = 621416448. Its totient is φ = 283189200.

The previous prime is 445220459. The next prime is 445220491. The reversal of 445220481 is 184022544.

It is not a de Polignac number, because 445220481 - 2⁹ = 445219969 is a prime.

It is a super-2 number, since 2×445220481² = 396442553403742722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445220491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27111 + ... + 40316.

It is an arithmetic number, because the mean of its divisors is an integer number (38838528).

Almost surely, 2^445220481 is an apocalyptic number.

It is an amenable number.

445220481 is a deficient number, since it is larger than the sum of its proper divisors (176195967).

445220481 is a wasteful number, since it uses less digits than its factorization.

445220481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67532.

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 445220481 is about 21100.2483634672. The cubic root of 445220481 is about 763.5867401492.

The spelling of 445220481 in words is "four hundred forty-five million, two hundred twenty thousand, four hundred eighty-one".