102513445 has 8 divisors (see below), whose sum is σ = 123496344. Its totient is φ = 81690624.

The previous prime is 102513443. The next prime is 102513449. The reversal of 102513445 is 544315201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61732449 + 40780996 = 7857^2 + 6386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102513445 - 2¹ = 102513443 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 (102513443) 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 7 ways as a sum of consecutive naturals, for example, 38604 + ... + 41173.

It is an arithmetic number, because the mean of its divisors is an integer number (15437043).

Almost surely, 2^102513445 is an apocalyptic number.

It is an amenable number.

102513445 is a deficient number, since it is larger than the sum of its proper divisors (20982899).

102513445 is an equidigital number, since it uses as much as digits as its factorization.

102513445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80039.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 102513445 is about 10124.8923451067. The cubic root of 102513445 is about 468.0155426815.

Adding to 102513445 its reverse (544315201), we get a palindrome (646828646).

The spelling of 102513445 in words is "one hundred two million, five hundred thirteen thousand, four hundred forty-five".