45424221 has 8 divisors (see below), whose sum is σ = 64128384. Its totient is φ = 28501440.

The previous prime is 45424201. The next prime is 45424229. The reversal of 45424221 is 12242454.

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 45424221 - 2⁵ = 45424189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45424191 and 45424200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45424229) 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, 445285 + ... + 445386.

It is an arithmetic number, because the mean of its divisors is an integer number (8016048).

Almost surely, 2^45424221 is an apocalyptic number.

It is an amenable number.

45424221 is a deficient number, since it is larger than the sum of its proper divisors (18704163).

45424221 is a wasteful number, since it uses less digits than its factorization.

45424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890691.

The product of its digits is 2560, while the sum is 24.

The square root of 45424221 is about 6739.7493276827. The cubic root of 45424221 is about 356.8035467089.

Adding to 45424221 its reverse (12242454), we get a palindrome (57666675).

The spelling of 45424221 in words is "forty-five million, four hundred twenty-four thousand, two hundred twenty-one".