102217345 has 16 divisors (see below), whose sum is σ = 130550400. Its totient is φ = 76564224.

The previous prime is 102217331. The next prime is 102217369. The reversal of 102217345 is 543712201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102217345 - 2⁹ = 102216833 is a prime.

It is an unprimeable number.

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, 13894 + ... + 19936.

It is an arithmetic number, because the mean of its divisors is an integer number (8159400).

Almost surely, 2^102217345 is an apocalyptic number.

It is an amenable number.

102217345 is a deficient number, since it is larger than the sum of its proper divisors (28333055).

102217345 is a wasteful number, since it uses less digits than its factorization.

102217345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 102217345 is about 10110.2593933094. The cubic root of 102217345 is about 467.5645025244.

Adding to 102217345 its reverse (543712201), we get a palindrome (645929546).

The spelling of 102217345 in words is "one hundred two million, two hundred seventeen thousand, three hundred forty-five".