45024721 has 24 divisors (see below), whose sum is σ = 56018304. Its totient is φ = 35320320.

The previous prime is 45024713. The next prime is 45024751. The reversal of 45024721 is 12742054.

45024721 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 45024721 - 2³ = 45024713 is a prime.

It is a super-2 number, since 2×45024721² = 4054451002255682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45024701) 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 23 ways as a sum of consecutive naturals, for example, 616741 + ... + 616813.

It is an arithmetic number, because the mean of its divisors is an integer number (2334096).

Almost surely, 2^45024721 is an apocalyptic number.

It is an amenable number.

45024721 is a deficient number, since it is larger than the sum of its proper divisors (10993583).

45024721 is an equidigital number, since it uses as much as digits as its factorization.

45024721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 45024721 is about 6710.0462740580. The cubic root of 45024721 is about 355.7544518288.

Adding to 45024721 its reverse (12742054), we get a palindrome (57766775).

The spelling of 45024721 in words is "forty-five million, twenty-four thousand, seven hundred twenty-one".