102513441 has 4 divisors (see below), whose sum is σ = 136684592.
Its totient is φ = 68342292.
The previous prime is 102513409. The next prime is 102513443. The reversal of 102513441 is 144315201.
Adding to 102513441 its reverse (144315201), we get a palindrome (246828642).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is not a de Polignac number, because 102513441 - 25 = 102513409 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (102513443) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17085571 + ... + 17085576.
It is an arithmetic number, because the mean of its divisors is an integer number (34171148).
Almost surely, 2102513441 is an apocalyptic number.
It is an amenable number.
102513441 is a deficient number, since it is larger than the sum of its proper divisors (34171151).
102513441 is an equidigital number, since it uses as much as digits as its factorization.
102513441 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34171150.
The product of its (nonzero) digits is 480, while the sum is 21.
The square root of 102513441 is about 10124.8921475737.
The cubic root of 102513441 is about 468.0155365943.
The spelling of 102513441 in words is "one hundred two million, five hundred thirteen thousand, four hundred forty-one".