45220115 has 4 divisors (see below), whose sum is σ = 54264144. Its totient is φ = 36176088.

The previous prime is 45220079. The next prime is 45220117. The reversal of 45220115 is 51102254.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45220115 - 2¹² = 45216019 is a prime.

It is a super-2 number, since 2×45220115² = 4089717601226450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45220117) 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, 4522007 + ... + 4522016.

It is an arithmetic number, because the mean of its divisors is an integer number (13566036).

Almost surely, 2^45220115 is an apocalyptic number.

45220115 is a deficient number, since it is larger than the sum of its proper divisors (9044029).

45220115 is an equidigital number, since it uses as much as digits as its factorization.

45220115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044028.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 45220115 is about 6724.5903220940. The cubic root of 45220115 is about 356.2683322874.

Adding to 45220115 its reverse (51102254), we get a palindrome (96322369).

The spelling of 45220115 in words is "forty-five million, two hundred twenty thousand, one hundred fifteen".