45127509 has 16 divisors (see below), whose sum is σ = 71137920. Its totient is φ = 24897600.

The previous prime is 45127487. The next prime is 45127519. The reversal of 45127509 is 90572154.

45127509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45127509 - 2¹² = 45123413 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45127509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45127519) 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 15 ways as a sum of consecutive naturals, for example, 36442 + ... + 37659.

It is an arithmetic number, because the mean of its divisors is an integer number (4446120).

Almost surely, 2^45127509 is an apocalyptic number.

It is an amenable number.

45127509 is a deficient number, since it is larger than the sum of its proper divisors (26010411).

45127509 is a wasteful number, since it uses less digits than its factorization.

45127509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74140.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 45127509 is about 6717.7011692989. The cubic root of 45127509 is about 356.0249661614.

It can be divided in two parts, 4512 and 7509, that added together give a palindrome (12021).

The spelling of 45127509 in words is "forty-five million, one hundred twenty-seven thousand, five hundred nine".