45181515 has 8 divisors (see below), whose sum is σ = 72290448. Its totient is φ = 24096800.

The previous prime is 45181511. The next prime is 45181561. The reversal of 45181515 is 51518154.

45181515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45181515 - 2² = 45181511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45181511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506036 + ... + 1506065.

It is an arithmetic number, because the mean of its divisors is an integer number (9036306).

Almost surely, 2^45181515 is an apocalyptic number.

45181515 is a deficient number, since it is larger than the sum of its proper divisors (27108933).

45181515 is a wasteful number, since it uses less digits than its factorization.

45181515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012109.

The product of its digits is 4000, while the sum is 30.

The square root of 45181515 is about 6721.7196460430. The cubic root of 45181515 is about 356.1669329257.

Adding to 45181515 its reverse (51518154), we get a palindrome (96699669).

The spelling of 45181515 in words is "forty-five million, one hundred eighty-one thousand, five hundred fifteen".