445323506 has 16 divisors (see below), whose sum is σ = 678076800. Its totient is φ = 219306528.

The previous prime is 445323497. The next prime is 445323511. The reversal of 445323506 is 605323544.

It is a super-2 number, since 2×445323506² = 396626049992264072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132515 + ... + 135833.

It is an arithmetic number, because the mean of its divisors is an integer number (42379800).

Almost surely, 2^445323506 is an apocalyptic number.

445323506 is a deficient number, since it is larger than the sum of its proper divisors (232753294).

445323506 is a wasteful number, since it uses less digits than its factorization.

445323506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 445323506 is about 21102.6895442263. The cubic root of 445323506 is about 763.6456341579.

The spelling of 445323506 in words is "four hundred forty-five million, three hundred twenty-three thousand, five hundred six".