102205513 has 4 divisors (see below), whose sum is σ = 108217620. Its totient is φ = 96193408.

The previous prime is 102205501. The next prime is 102205517. The reversal of 102205513 is 315502201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71436304 + 30769209 = 8452^2 + 5547^2 .

It is a cyclic number.

It is not a de Polignac number, because 102205513 - 2⁹ = 102205001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102205517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3006028 + ... + 3006061.

It is an arithmetic number, because the mean of its divisors is an integer number (27054405).

Almost surely, 2^102205513 is an apocalyptic number.

It is an amenable number.

102205513 is a deficient number, since it is larger than the sum of its proper divisors (6012107).

102205513 is an equidigital number, since it uses as much as digits as its factorization.

102205513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012106.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 102205513 is about 10109.6742281836. The cubic root of 102205513 is about 467.5464611092.

Adding to 102205513 its reverse (315502201), we get a palindrome (417707714).

The spelling of 102205513 in words is "one hundred two million, two hundred five thousand, five hundred thirteen".