45117723 has 32 divisors (see below), whose sum is σ = 73408000. Its totient is φ = 24074496.

The previous prime is 45117719. The next prime is 45117739. The reversal of 45117723 is 32771154.

It is not a de Polignac number, because 45117723 - 2² = 45117719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45117773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28353 + ... + 29901.

It is an arithmetic number, because the mean of its divisors is an integer number (2294000).

Almost surely, 2^45117723 is an apocalyptic number.

45117723 is a deficient number, since it is larger than the sum of its proper divisors (28290277).

45117723 is a wasteful number, since it uses less digits than its factorization.

45117723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its digits is 5880, while the sum is 30.

The square root of 45117723 is about 6716.9727556393. The cubic root of 45117723 is about 355.9992293675. Note that the first 3 decimals are identical.

Adding to 45117723 its reverse (32771154), we get a palindrome (77888877).

The spelling of 45117723 in words is "forty-five million, one hundred seventeen thousand, seven hundred twenty-three".