45524221 has 4 divisors (see below), whose sum is σ = 45548352. Its totient is φ = 45500092.

The previous prime is 45524201. The next prime is 45524231. The reversal of 45524221 is 12242554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45524221 - 2⁵ = 45524189 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 (45524201) 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, 8971 + ... + 13096.

It is an arithmetic number, because the mean of its divisors is an integer number (11387088).

Almost surely, 2^45524221 is an apocalyptic number.

It is an amenable number.

45524221 is a deficient number, since it is larger than the sum of its proper divisors (24131).

45524221 is a wasteful number, since it uses less digits than its factorization.

45524221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24130.

The product of its digits is 3200, while the sum is 25.

The square root of 45524221 is about 6747.1639227160. The cubic root of 45524221 is about 357.0651854177.

Adding to 45524221 its reverse (12242554), we get a palindrome (57766775).

The spelling of 45524221 in words is "forty-five million, five hundred twenty-four thousand, two hundred twenty-one".