445001481 has 6 divisors (see below), whose sum is σ = 642779930. Its totient is φ = 296667648.

The previous prime is 445001467. The next prime is 445001483. The reversal of 445001481 is 184100544.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 410427081 + 34574400 = 20259^2 + 5880^2 .

It is not a de Polignac number, because 445001481 - 2⁵ = 445001449 is a prime.

It is a super-2 number, since 2×445001481² = 396052636184386722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445001483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24722296 + ... + 24722313.

Almost surely, 2^445001481 is an apocalyptic number.

It is an amenable number.

445001481 is a deficient number, since it is larger than the sum of its proper divisors (197778449).

445001481 is a wasteful number, since it uses less digits than its factorization.

445001481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49444615 (or 49444612 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 445001481 is about 21095.0582127663. The cubic root of 445001481 is about 763.4615191035.

The spelling of 445001481 in words is "four hundred forty-five million, one thousand, four hundred eighty-one".