45545617 has 4 divisors (see below), whose sum is σ = 49049140. Its totient is φ = 42042096.

The previous prime is 45545597. The next prime is 45545627. The reversal of 45545617 is 71654554.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71654554 = 2 ⋅35827277.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 28206721 = 4164^2 + 5311^2 .

It is a cyclic number.

It is not a de Polignac number, because 45545617 - 2¹⁹ = 45021329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45545627) 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, 1751742 + ... + 1751767.

It is an arithmetic number, because the mean of its divisors is an integer number (12262285).

Almost surely, 2^45545617 is an apocalyptic number.

It is an amenable number.

45545617 is a deficient number, since it is larger than the sum of its proper divisors (3503523).

45545617 is a wasteful number, since it uses less digits than its factorization.

45545617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503522.

The product of its digits is 84000, while the sum is 37.

The square root of 45545617 is about 6748.7492915354. The cubic root of 45545617 is about 357.1211158651.

The spelling of 45545617 in words is "forty-five million, five hundred forty-five thousand, six hundred seventeen".