445166003 has 4 divisors (see below), whose sum is σ = 445717080. Its totient is φ = 444614928.

The previous prime is 445165993. The next prime is 445166011. The reversal of 445166003 is 300661544.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445166003 - 2¹⁴ = 445149619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445166053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274325 + ... + 275942.

It is an arithmetic number, because the mean of its divisors is an integer number (111429270).

Almost surely, 2^445166003 is an apocalyptic number.

445166003 is a deficient number, since it is larger than the sum of its proper divisors (551077).

445166003 is an equidigital number, since it uses as much as digits as its factorization.

445166003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551076.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 445166003 is about 21098.9573913025. The cubic root of 445166003 is about 763.5555942510. Note that the first 4 decimals are identical.

The spelling of 445166003 in words is "four hundred forty-five million, one hundred sixty-six thousand, three".