44545013 has 4 divisors (see below), whose sum is σ = 44615148. Its totient is φ = 44474880.

The previous prime is 44545009. The next prime is 44545031. The reversal of 44545013 is 31054544.

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 42289009 + 2256004 = 6503^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 44545013 - 2² = 44545009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44545093) 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, 34106 + ... + 35387.

It is an arithmetic number, because the mean of its divisors is an integer number (11153787).

Almost surely, 2^44545013 is an apocalyptic number.

It is an amenable number.

44545013 is a deficient number, since it is larger than the sum of its proper divisors (70135).

44545013 is an equidigital number, since it uses as much as digits as its factorization.

44545013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70134.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 44545013 is about 6674.2050462958. The cubic root of 44545013 is about 354.4864968866.

Adding to 44545013 its reverse (31054544), we get a palindrome (75599557).

The spelling of 44545013 in words is "forty-four million, five hundred forty-five thousand, thirteen".