45591517 has 4 divisors (see below), whose sum is σ = 45690876. Its totient is φ = 45492160.

The previous prime is 45591503. The next prime is 45591527. The reversal of 45591517 is 71519554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71519554 = 2 ⋅35759777.

It can be written as a sum of positive squares in 2 ways, for example, as 18071001 + 27520516 = 4251^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 45591517 - 2¹¹ = 45589469 is a prime.

It is a super-2 number, since 2×45591517² = 4157172844722578, 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 (45591527) 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, 48988 + ... + 49909.

It is an arithmetic number, because the mean of its divisors is an integer number (11422719).

Almost surely, 2^45591517 is an apocalyptic number.

It is an amenable number.

45591517 is a deficient number, since it is larger than the sum of its proper divisors (99359).

45591517 is an equidigital number, since it uses as much as digits as its factorization.

45591517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99358.

The product of its digits is 31500, while the sum is 37.

The square root of 45591517 is about 6752.1490652977. The cubic root of 45591517 is about 357.2410421932.

The spelling of 45591517 in words is "forty-five million, five hundred ninety-one thousand, five hundred seventeen".