45052221 has 8 divisors (see below), whose sum is σ = 61054624. Its totient is φ = 29542320.

The previous prime is 45052187. The next prime is 45052237. The reversal of 45052221 is 12225054.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45052221 - 2⁶ = 45052157 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 (45052291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122911 + ... + 123276.

It is an arithmetic number, because the mean of its divisors is an integer number (7631828).

Almost surely, 2^45052221 is an apocalyptic number.

It is an amenable number.

45052221 is a deficient number, since it is larger than the sum of its proper divisors (16002403).

45052221 is a wasteful number, since it uses less digits than its factorization.

45052221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246251.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45052221 is about 6712.0951274546. The cubic root of 45052221 is about 355.8268657982.

Adding to 45052221 its reverse (12225054), we get a palindrome (57277275).

The spelling of 45052221 in words is "forty-five million, fifty-two thousand, two hundred twenty-one".