445544141 has 4 divisors (see below), whose sum is σ = 509193312. Its totient is φ = 381894972.

The previous prime is 445544123. The next prime is 445544147. The reversal of 445544141 is 141445544.

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 a de Polignac number, because none of the positive numbers 2^k-445544141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 445544098 and 445544107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445544147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31824575 + ... + 31824588.

It is an arithmetic number, because the mean of its divisors is an integer number (127298328).

Almost surely, 2^445544141 is an apocalyptic number.

It is an amenable number.

445544141 is a deficient number, since it is larger than the sum of its proper divisors (63649171).

445544141 is an equidigital number, since it uses as much as digits as its factorization.

445544141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63649170.

The product of its digits is 25600, while the sum is 32.

The square root of 445544141 is about 21107.9165480632. The cubic root of 445544141 is about 763.7717291086.

Adding to 445544141 its reverse (141445544), we get a palindrome (586989685).

The spelling of 445544141 in words is "four hundred forty-five million, five hundred forty-four thousand, one hundred forty-one".