44472145 has 4 divisors (see below), whose sum is σ = 53366580. Its totient is φ = 35577712.

The previous prime is 44472139. The next prime is 44472149. The reversal of 44472145 is 54127444.

44472145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22127616 + 22344529 = 4704^2 + 4727^2 .

It is a cyclic number.

It is not a de Polignac number, because 44472145 - 2³ = 44472137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44472149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4447210 + ... + 4447219.

It is an arithmetic number, because the mean of its divisors is an integer number (13341645).

Almost surely, 2^44472145 is an apocalyptic number.

It is an amenable number.

44472145 is a deficient number, since it is larger than the sum of its proper divisors (8894435).

44472145 is an equidigital number, since it uses as much as digits as its factorization.

44472145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8894434.

The product of its digits is 17920, while the sum is 31.

The square root of 44472145 is about 6668.7438847207. The cubic root of 44472145 is about 354.2930983592.

Adding to 44472145 its reverse (54127444), we get a palindrome (98599589).

The spelling of 44472145 in words is "forty-four million, four hundred seventy-two thousand, one hundred forty-five".