45221445 has 24 divisors (see below), whose sum is σ = 82996056. Its totient is φ = 22699008.

The previous prime is 45221443. The next prime is 45221447. The reversal of 45221445 is 54412254.

It is an interprime number because it is at equal distance from previous prime (45221443) and next prime (45221447).

It can be written as a sum of positive squares in 4 ways, for example, as 24591681 + 20629764 = 4959^2 + 4542^2 .

It is not a de Polignac number, because 45221445 - 2¹ = 45221443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45221441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28792 + ... + 30321.

It is an arithmetic number, because the mean of its divisors is an integer number (3458169).

Almost surely, 2^45221445 is an apocalyptic number.

45221445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45221445 is a deficient number, since it is larger than the sum of its proper divisors (37774611).

45221445 is a wasteful number, since it uses less digits than its factorization.

45221445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59141 (or 59138 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 45221445 is about 6724.6892121495. The cubic root of 45221445 is about 356.2718250710.

Adding to 45221445 its reverse (54412254), we get a palindrome (99633699).

The spelling of 45221445 in words is "forty-five million, two hundred twenty-one thousand, four hundred forty-five".