445513 has 4 divisors (see below), whose sum is σ = 455040. Its totient is φ = 435988.

The previous prime is 445507. The next prime is 445537. The reversal of 445513 is 315544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445513 - 2⁹ = 445001 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 4693 + ... + 4786.

It is an arithmetic number, because the mean of its divisors is an integer number (113760).

2⁴⁴⁵⁵¹³ is an apocalyptic number.

It is an amenable number.

445513 is a deficient number, since it is larger than the sum of its proper divisors (9527).

445513 is an equidigital number, since it uses as much as digits as its factorization.

445513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526.

The product of its digits is 1200, while the sum is 22.

The square root of 445513 is about 667.4676022100. The cubic root of 445513 is about 76.3753934261.

The spelling of 445513 in words is "four hundred forty-five thousand, five hundred thirteen".