45521444 has 12 divisors (see below), whose sum is σ = 84348684. Its totient is φ = 21421824.

The previous prime is 45521431. The next prime is 45521447. The reversal of 45521444 is 44412554.

It can be written as a sum of positive squares in 2 ways, for example, as 39942400 + 5579044 = 6320^2 + 2362^2 .

It is not an unprimeable number, because it can be changed into a prime (45521447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334649 + ... + 334784.

It is an arithmetic number, because the mean of its divisors is an integer number (7029057).

Almost surely, 2^45521444 is an apocalyptic number.

It is an amenable number.

45521444 is a deficient number, since it is larger than the sum of its proper divisors (38827240).

45521444 is a wasteful number, since it uses less digits than its factorization.

45521444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669454 (or 669452 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 45521444 is about 6746.9581294091. The cubic root of 45521444 is about 357.0579248857.

Adding to 45521444 its reverse (44412554), we get a palindrome (89933998).

The spelling of 45521444 in words is "forty-five million, five hundred twenty-one thousand, four hundred forty-four".