445545544 has 8 divisors (see below), whose sum is σ = 835397910. Its totient is φ = 222772768.

The previous prime is 445545533. The next prime is 445545587.

445545544 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 431392900 + 14152644 = 20770^2 + 3762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 445545497 and 445545506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27846589 + ... + 27846604.

Almost surely, 2^445545544 is an apocalyptic number.

It is an amenable number.

445545544 is a deficient number, since it is larger than the sum of its proper divisors (389852366).

445545544 is a wasteful number, since it uses less digits than its factorization.

445545544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55693199 (or 55693195 counting only the distinct ones).

The product of its digits is 640000, while the sum is 40.

The square root of 445545544 is about 21107.9497820134. The cubic root of 445545544 is about 763.7725308029.

The spelling of 445545544 in words is "four hundred forty-five million, five hundred forty-five thousand, five hundred forty-four".