45645817 has 4 divisors (see below), whose sum is σ = 52166656. Its totient is φ = 39124980.

The previous prime is 45645791. The next prime is 45645863. The reversal of 45645817 is 71854654.

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 a cyclic number.

It is not a de Polignac number, because 45645817 - 2⁷ = 45645689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45645817.

It is not an unprimeable number, because it can be changed into a prime (45645517) 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, 3260409 + ... + 3260422.

It is an arithmetic number, because the mean of its divisors is an integer number (13041664).

Almost surely, 2^45645817 is an apocalyptic number.

It is an amenable number.

45645817 is a deficient number, since it is larger than the sum of its proper divisors (6520839).

45645817 is an equidigital number, since it uses as much as digits as its factorization.

45645817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6520838.

The product of its digits is 134400, while the sum is 40.

The square root of 45645817 is about 6756.1688107980. The cubic root of 45645817 is about 357.3828119332.

The spelling of 45645817 in words is "forty-five million, six hundred forty-five thousand, eight hundred seventeen".