2445173217 has 16 divisors (see below), whose sum is σ = 3779978880. Its totient is φ = 1559240496.

The previous prime is 2445173209. The next prime is 2445173221. The reversal of 2445173217 is 7123715442.

2445173217 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 2445173217 - 2³ = 2445173209 is a prime.

It is a super-2 number, since 2×2445173217² = 11957744122268258178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2445173207) 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, 1968118 + ... + 1969359.

It is an arithmetic number, because the mean of its divisors is an integer number (236248680).

Almost surely, 2^2445173217 is an apocalyptic number.

2445173217 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2445173217 is a deficient number, since it is larger than the sum of its proper divisors (1334805663).

2445173217 is a wasteful number, since it uses less digits than its factorization.

2445173217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937509 (or 3937503 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2445173217 is about 49448.6927734192. The cubic root of 2445173217 is about 1347.2138637915.

Adding to 2445173217 its reverse (7123715442), we get a palindrome (9568888659).

The spelling of 2445173217 in words is "two billion, four hundred forty-five million, one hundred seventy-three thousand, two hundred seventeen".