445546 has 4 divisors (see below), whose sum is σ = 668322. Its totient is φ = 222772.

The previous prime is 445541. The next prime is 445567. The reversal of 445546 is 645544.

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

It can be written as a sum of positive squares in only one way, i.e., 330625 + 114921 = 575^2 + 339^2 .

It is a super-2 number, since 2×445546² = 397022476232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111385 + ... + 111388.

2⁴⁴⁵⁵⁴⁶ is an apocalyptic number.

445546 is a deficient number, since it is larger than the sum of its proper divisors (222776).

445546 is a wasteful number, since it uses less digits than its factorization.

445546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222775.

The product of its digits is 9600, while the sum is 28.

The square root of 445546 is about 667.4923220532. The cubic root of 445546 is about 76.3772791367.

The spelling of 445546 in words is "four hundred forty-five thousand, five hundred forty-six".