45222515 has 16 divisors (see below), whose sum is σ = 59548608. Its totient is φ = 32762496.

The previous prime is 45222509. The next prime is 45222517. The reversal of 45222515 is 51522254.

It is not a de Polignac number, because 45222515 - 2¹⁸ = 44960371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45222517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3119 + ... + 10008.

It is an arithmetic number, because the mean of its divisors is an integer number (3721788).

Almost surely, 2^45222515 is an apocalyptic number.

45222515 is a deficient number, since it is larger than the sum of its proper divisors (14326093).

45222515 is a wasteful number, since it uses less digits than its factorization.

45222515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13198.

The product of its digits is 4000, while the sum is 26.

The square root of 45222515 is about 6724.7687692589. The cubic root of 45222515 is about 356.2746350052.

Adding to 45222515 its reverse (51522254), we get a palindrome (96744769).

The spelling of 45222515 in words is "forty-five million, two hundred twenty-two thousand, five hundred fifteen".