45197217 has 16 divisors (see below), whose sum is σ = 72110080. Its totient is φ = 27813456.

The previous prime is 45197189. The next prime is 45197249. The reversal of 45197217 is 71279154.

It is a happy number.

45197217 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 45197217 - 2⁸ = 45196961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45197617) 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, 64033 + ... + 64734.

It is an arithmetic number, because the mean of its divisors is an integer number (4506880).

Almost surely, 2^45197217 is an apocalyptic number.

It is an amenable number.

45197217 is a deficient number, since it is larger than the sum of its proper divisors (26912863).

45197217 is a wasteful number, since it uses less digits than its factorization.

45197217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128789 (or 128783 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 45197217 is about 6722.8875492604. The cubic root of 45197217 is about 356.2081878906.

The spelling of 45197217 in words is "forty-five million, one hundred ninety-seven thousand, two hundred seventeen".