45222621 has 16 divisors (see below), whose sum is σ = 63103104. Its totient is φ = 28776384.

The previous prime is 45222613. The next prime is 45222637. The reversal of 45222621 is 12622254.

It is a happy number.

45222621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45222621 - 2³ = 45222613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45222591 and 45222600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45222421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (3943944).

Almost surely, 2^45222621 is an apocalyptic number.

It is an amenable number.

45222621 is a deficient number, since it is larger than the sum of its proper divisors (17880483).

45222621 is a wasteful number, since it uses less digits than its factorization.

45222621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780.

The product of its digits is 1920, while the sum is 24.

The square root of 45222621 is about 6724.7766505662. The cubic root of 45222621 is about 356.2749133701.

Adding to 45222621 its reverse (12622254), we get a palindrome (57844875).

The spelling of 45222621 in words is "forty-five million, two hundred twenty-two thousand, six hundred twenty-one".