445564111 has 4 divisors (see below), whose sum is σ = 446323752. Its totient is φ = 444804472.

The previous prime is 445564051. The next prime is 445564127. The reversal of 445564111 is 111465544.

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 445564111 - 2¹⁵ = 445531343 is a prime.

It is a super-2 number, since 2×445564111² = 397054754022440642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445564411) 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, 378940 + ... + 380113.

It is an arithmetic number, because the mean of its divisors is an integer number (111580938).

Almost surely, 2^445564111 is an apocalyptic number.

445564111 is a deficient number, since it is larger than the sum of its proper divisors (759641).

445564111 is an equidigital number, since it uses as much as digits as its factorization.

445564111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759640.

The product of its digits is 9600, while the sum is 31.

The square root of 445564111 is about 21108.3895880287. The cubic root of 445564111 is about 763.7831400943.

The spelling of 445564111 in words is "four hundred forty-five million, five hundred sixty-four thousand, one hundred eleven".