45103221 has 12 divisors (see below), whose sum is σ = 66535872. Its totient is φ = 29428776.

The previous prime is 45103187. The next prime is 45103291. The reversal of 45103221 is 12230154.

It is not a de Polignac number, because 45103221 - 2⁹ = 45102709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45103194 and 45103203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45103291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52891 + ... + 53736.

It is an arithmetic number, because the mean of its divisors is an integer number (5544656).

Almost surely, 2^45103221 is an apocalyptic number.

It is an amenable number.

45103221 is a deficient number, since it is larger than the sum of its proper divisors (21432651).

45103221 is a wasteful number, since it uses less digits than its factorization.

45103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106680 (or 106677 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 45103221 is about 6715.8931647250. The cubic root of 45103221 is about 355.9610828350.

Adding to 45103221 its reverse (12230154), we get a palindrome (57333375).

The spelling of 45103221 in words is "forty-five million, one hundred three thousand, two hundred twenty-one".