102215165 has 16 divisors (see below), whose sum is σ = 133585200. Its totient is φ = 74629632.

The previous prime is 102215161. The next prime is 102215207. The reversal of 102215165 is 561512201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 32024281 + 70190884 = 5659^2 + 8378^2 .

It is a cyclic number.

It is not a de Polignac number, because 102215165 - 2² = 102215161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102215165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102215161) 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, 3050 + ... + 14619.

It is an arithmetic number, because the mean of its divisors is an integer number (8349075).

Almost surely, 2^102215165 is an apocalyptic number.

It is an amenable number.

102215165 is a deficient number, since it is larger than the sum of its proper divisors (31370035).

102215165 is a wasteful number, since it uses less digits than its factorization.

102215165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17776.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 102215165 is about 10110.1515814551. The cubic root of 102215165 is about 467.5611785684.

Adding to 102215165 its reverse (561512201), we get a palindrome (663727366).

The spelling of 102215165 in words is "one hundred two million, two hundred fifteen thousand, one hundred sixty-five".