45440013 has 16 divisors (see below), whose sum is σ = 64209600. Its totient is φ = 28533120.

The previous prime is 45440009. The next prime is 45440047. The reversal of 45440013 is 31004454.

45440013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45440013 - 2² = 45440009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45440413) 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 15 ways as a sum of consecutive naturals, for example, 2803 + ... + 9936.

It is an arithmetic number, because the mean of its divisors is an integer number (4013100).

Almost surely, 2^45440013 is an apocalyptic number.

It is an amenable number.

45440013 is a deficient number, since it is larger than the sum of its proper divisors (18769587).

45440013 is a wasteful number, since it uses less digits than its factorization.

45440013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45440013 is about 6740.9207828011. The cubic root of 45440013 is about 356.8448902083.

Adding to 45440013 its reverse (31004454), we get a palindrome (76444467).

The spelling of 45440013 in words is "forty-five million, four hundred forty thousand, thirteen".