45123717 has 4 divisors (see below), whose sum is σ = 60164960. Its totient is φ = 30082476.

The previous prime is 45123691. The next prime is 45123791. The reversal of 45123717 is 71732154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45123717 - 2¹⁸ = 44861573 is a prime.

It is a super-2 number, since 2×45123717² = 4072299671792178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45123317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7520617 + ... + 7520622.

It is an arithmetic number, because the mean of its divisors is an integer number (15041240).

Almost surely, 2^45123717 is an apocalyptic number.

It is an amenable number.

45123717 is a deficient number, since it is larger than the sum of its proper divisors (15041243).

45123717 is a wasteful number, since it uses less digits than its factorization.

45123717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15041242.

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

The square root of 45123717 is about 6717.4189239618. The cubic root of 45123717 is about 356.0149937926.

The spelling of 45123717 in words is "forty-five million, one hundred twenty-three thousand, seven hundred seventeen".