102215597 has 6 divisors (see below), whose sum is σ = 112352814. Its totient is φ = 92923160.

The previous prime is 102215567. The next prime is 102215599. The reversal of 102215597 is 795512201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 102191881 + 23716 = 10109^2 + 154^2 .

It is not a de Polignac number, because 102215597 - 2¹⁴ = 102199213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102215599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422258 + ... + 422499.

It is an arithmetic number, because the mean of its divisors is an integer number (18725469).

Almost surely, 2^102215597 is an apocalyptic number.

It is an amenable number.

102215597 is a deficient number, since it is larger than the sum of its proper divisors (10137217).

102215597 is an equidigital number, since it uses as much as digits as its factorization.

102215597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844779 (or 844768 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 102215597 is about 10110.1729460974. The cubic root of 102215597 is about 467.5618372643.

Adding to 102215597 its reverse (795512201), we get a palindrome (897727798).

The spelling of 102215597 in words is "one hundred two million, two hundred fifteen thousand, five hundred ninety-seven".