45713221 has 16 divisors (see below), whose sum is σ = 51226560. Its totient is φ = 40538880.

The previous prime is 45713207. The next prime is 45713231. The reversal of 45713221 is 12231754.

It is a happy number.

45713221 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 45713221 - 2²³ = 37324613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45713231) 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, 98931 + ... + 99391.

It is an arithmetic number, because the mean of its divisors is an integer number (3201660).

Almost surely, 2^45713221 is an apocalyptic number.

It is an amenable number.

45713221 is a deficient number, since it is larger than the sum of its proper divisors (5513339).

45713221 is a wasteful number, since it uses less digits than its factorization.

45713221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its digits is 1680, while the sum is 25.

The square root of 45713221 is about 6761.1553006864. The cubic root of 45713221 is about 357.5586380741.

Adding to 45713221 its reverse (12231754), we get a palindrome (57944975).

The spelling of 45713221 in words is "forty-five million, seven hundred thirteen thousand, two hundred twenty-one".