45584721 has 32 divisors (see below), whose sum is σ = 83121920. Its totient is φ = 24043392.

The previous prime is 45584719. The next prime is 45584729. The reversal of 45584721 is 12748554.

45584721 is a `hidden beast` number, since 4 + 5 + 584 + 72 + 1 = 666.

45584721 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 45584721 - 2¹ = 45584719 is a prime.

It is a super-3 number, since 3×45584721³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (45584729) 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 31 ways as a sum of consecutive naturals, for example, 6820 + ... + 11733.

It is an arithmetic number, because the mean of its divisors is an integer number (2597560).

Almost surely, 2^45584721 is an apocalyptic number.

It is an amenable number.

45584721 is a deficient number, since it is larger than the sum of its proper divisors (37537199).

45584721 is a wasteful number, since it uses less digits than its factorization.

45584721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18582 (or 18576 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 45584721 is about 6751.6457993588. The cubic root of 45584721 is about 357.2232908590.

The spelling of 45584721 in words is "forty-five million, five hundred eighty-four thousand, seven hundred twenty-one".