45026221 has 4 divisors (see below), whose sum is σ = 45049500. Its totient is φ = 45002944.

The previous prime is 45026171. The next prime is 45026243. The reversal of 45026221 is 12262054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7645225 + 37380996 = 2765^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 45026221 - 2⁹ = 45025709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45026192 and 45026201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45026021) 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, 8446 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (11262375).

Almost surely, 2^45026221 is an apocalyptic number.

It is an amenable number.

45026221 is a deficient number, since it is larger than the sum of its proper divisors (23279).

45026221 is a wasteful number, since it uses less digits than its factorization.

45026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23278.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 45026221 is about 6710.1580458287. The cubic root of 45026221 is about 355.7584024418.

Adding to 45026221 its reverse (12262054), we get a palindrome (57288275).

The spelling of 45026221 in words is "forty-five million, twenty-six thousand, two hundred twenty-one".