45647217 has 48 divisors (see below), whose sum is σ = 82867200. Its totient is φ = 23522400.

The previous prime is 45647207. The next prime is 45647219. The reversal of 45647217 is 71274654.

45647217 is a `hidden beast` number, since 4 + 5 + 647 + 2 + 1 + 7 = 666.

It is not a de Polignac number, because 45647217 - 2⁴ = 45647201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45647219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137742 + ... + 138072.

It is an arithmetic number, because the mean of its divisors is an integer number (1726400).

Almost surely, 2^45647217 is an apocalyptic number.

It is an amenable number.

45647217 is a deficient number, since it is larger than the sum of its proper divisors (37219983).

45647217 is a wasteful number, since it uses less digits than its factorization.

45647217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 551 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 45647217 is about 6756.2724190192. The cubic root of 45647217 is about 357.3864656512.

It can be divided in two parts, 4564 and 7217, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 45647217 in words is "forty-five million, six hundred forty-seven thousand, two hundred seventeen".