45173639 has 6 divisors (see below), whose sum is σ = 52548984. Its totient is φ = 38720220.

The previous prime is 45173617. The next prime is 45173651. The reversal of 45173639 is 93637154.

It is a happy number.

45173639 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 45173639 - 2⁸ = 45173383 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 (45173699) 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 5 ways as a sum of consecutive naturals, for example, 460907 + ... + 461004.

It is an arithmetic number, because the mean of its divisors is an integer number (8758164).

Almost surely, 2^45173639 is an apocalyptic number.

45173639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

45173639 is a deficient number, since it is larger than the sum of its proper divisors (7375345).

45173639 is an equidigital number, since it uses as much as digits as its factorization.

45173639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921925 (or 921918 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 45173639 is about 6721.1337585262. The cubic root of 45173639 is about 356.1462361594.

The spelling of 45173639 in words is "forty-five million, one hundred seventy-three thousand, six hundred thirty-nine".