45519745 has 4 divisors (see below), whose sum is σ = 54623700. Its totient is φ = 36415792.

The previous prime is 45519743. The next prime is 45519751. The reversal of 45519745 is 54791554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6594624 + 38925121 = 2568^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 45519745 - 2¹ = 45519743 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 45519698 and 45519707.

It is not an unprimeable number, because it can be changed into a prime (45519743) 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, 4551970 + ... + 4551979.

It is an arithmetic number, because the mean of its divisors is an integer number (13655925).

Almost surely, 2^45519745 is an apocalyptic number.

It is an amenable number.

45519745 is a deficient number, since it is larger than the sum of its proper divisors (9103955).

45519745 is an equidigital number, since it uses as much as digits as its factorization.

45519745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103954.

The product of its digits is 126000, while the sum is 40.

The square root of 45519745 is about 6746.8322196420. The cubic root of 45519745 is about 357.0534826646.

It can be divided in two parts, 45519 and 745, that added together give a palindrome (46264).

The spelling of 45519745 in words is "forty-five million, five hundred nineteen thousand, seven hundred forty-five".