445144523 has 4 divisors (see below), whose sum is σ = 445245120. Its totient is φ = 445043928.

The previous prime is 445144489. The next prime is 445144529. The reversal of 445144523 is 325441544.

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 445144523 - 2¹⁶ = 445078987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445144523.

It is not an unprimeable number, because it can be changed into a prime (445144529) 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, 43340 + ... + 52617.

It is an arithmetic number, because the mean of its divisors is an integer number (111311280).

Almost surely, 2^445144523 is an apocalyptic number.

445144523 is a deficient number, since it is larger than the sum of its proper divisors (100597).

445144523 is an equidigital number, since it uses as much as digits as its factorization.

445144523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100596.

The product of its digits is 38400, while the sum is 32.

The square root of 445144523 is about 21098.4483552701. The cubic root of 445144523 is about 763.5433131111.

The spelling of 445144523 in words is "four hundred forty-five million, one hundred forty-four thousand, five hundred twenty-three".