44451145 has 4 divisors (see below), whose sum is σ = 53341380. Its totient is φ = 35560912.

The previous prime is 44451137. The next prime is 44451151. The reversal of 44451145 is 54115444.

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 7338681 + 37112464 = 2709^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 44451145 - 2³ = 44451137 is a prime.

It is a super-2 number, since 2×44451145² = 3951808583622050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4445110 + ... + 4445119.

It is an arithmetic number, because the mean of its divisors is an integer number (13335345).

Almost surely, 2^44451145 is an apocalyptic number.

It is an amenable number.

44451145 is a deficient number, since it is larger than the sum of its proper divisors (8890235).

44451145 is an equidigital number, since it uses as much as digits as its factorization.

44451145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890234.

The product of its digits is 6400, while the sum is 28.

The square root of 44451145 is about 6667.1691893937. The cubic root of 44451145 is about 354.2373231733.

Adding to 44451145 its reverse (54115444), we get a palindrome (98566589).

The spelling of 44451145 in words is "forty-four million, four hundred fifty-one thousand, one hundred forty-five".