445553 has 4 divisors (see below), whose sum is σ = 471780. Its totient is φ = 419328.

The previous prime is 445541. The next prime is 445567. The reversal of 445553 is 355544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258064 + 187489 = 508^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 445553 - 2⁴ = 445537 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 3 ways as a sum of consecutive naturals, for example, 13088 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (117945).

2⁴⁴⁵⁵⁵³ is an apocalyptic number.

It is an amenable number.

445553 is a deficient number, since it is larger than the sum of its proper divisors (26227).

445553 is a wasteful number, since it uses less digits than its factorization.

445553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26226.

The product of its digits is 6000, while the sum is 26.

The square root of 445553 is about 667.4975655386. The cubic root of 445553 is about 76.3776791240.

Subtracting from 445553 its reverse (355544), we obtain a palindrome (90009).

The spelling of 445553 in words is "four hundred forty-five thousand, five hundred fifty-three".