445247 has 8 divisors (see below), whose sum is σ = 514512. Its totient is φ = 380800.

The previous prime is 445229. The next prime is 445261. The reversal of 445247 is 742544.

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

It is not a de Polignac number, because 445247 - 2⁶ = 445183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445297) 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 7 ways as a sum of consecutive naturals, for example, 1004 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (64314).

2⁴⁴⁵²⁴⁷ is an apocalyptic number.

445247 is a deficient number, since it is larger than the sum of its proper divisors (69265).

445247 is a wasteful number, since it uses less digits than its factorization.

445247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409.

The product of its digits is 4480, while the sum is 26.

The square root of 445247 is about 667.2683118506. The cubic root of 445247 is about 76.3601900544.

The spelling of 445247 in words is "four hundred forty-five thousand, two hundred forty-seven".