445523 has 8 divisors (see below), whose sum is σ = 491568. Its totient is φ = 401184.

The previous prime is 445507. The next prime is 445537. The reversal of 445523 is 325544.

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

It is a cyclic number.

It is not a de Polignac number, because 445523 - 2⁴ = 445507 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (445573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (61446).

2⁴⁴⁵⁵²³ is an apocalyptic number.

445523 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

445523 is a deficient number, since it is larger than the sum of its proper divisors (46045).

445523 is a wasteful number, since it uses less digits than its factorization.

445523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its digits is 2400, while the sum is 23.

The square root of 445523 is about 667.4750931683. The cubic root of 445523 is about 76.3759648634.

The spelling of 445523 in words is "four hundred forty-five thousand, five hundred twenty-three".