445292081 has 8 divisors (see below), whose sum is σ = 479825640. Its totient is φ = 410798592.

The previous prime is 445292069. The next prime is 445292087. The reversal of 445292081 is 180292544.

It can be written as a sum of positive squares in 4 ways, for example, as 9150625 + 436141456 = 3025^2 + 20884^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445292081 - 2⁶ = 445292017 is a prime.

It is a super-2 number, since 2×445292081² = 396570074802621122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445292087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15491 + ... + 33623.

It is an arithmetic number, because the mean of its divisors is an integer number (59978205).

Almost surely, 2^445292081 is an apocalyptic number.

It is an amenable number.

445292081 is a deficient number, since it is larger than the sum of its proper divisors (34533559).

445292081 is a wasteful number, since it uses less digits than its factorization.

445292081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 445292081 is about 21101.9449577521. The cubic root of 445292081 is about 763.6276710904.

The spelling of 445292081 in words is "four hundred forty-five million, two hundred ninety-two thousand, eighty-one".