45109623 has 32 divisors (see below), whose sum is σ = 68164096. Its totient is φ = 26345088.

The previous prime is 45109523. The next prime is 45109639. The reversal of 45109623 is 32690154.

45109623 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 45109623 - 2⁸ = 45109367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45109663) 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 31 ways as a sum of consecutive naturals, for example, 61686 + ... + 62412.

It is an arithmetic number, because the mean of its divisors is an integer number (2130128).

Almost surely, 2^45109623 is an apocalyptic number.

45109623 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

45109623 is a deficient number, since it is larger than the sum of its proper divisors (23054473).

45109623 is a wasteful number, since it uses less digits than its factorization.

45109623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 45109623 is about 6716.3697783847. The cubic root of 45109623 is about 355.9779238720.

Adding to 45109623 its reverse (32690154), we get a palindrome (77799777).

The spelling of 45109623 in words is "forty-five million, one hundred nine thousand, six hundred twenty-three".