102386521 has 8 divisors (see below), whose sum is σ = 105853184. Its totient is φ = 98930160.

The previous prime is 102386503. The next prime is 102386527. The reversal of 102386521 is 125683201.

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 102386521 - 2⁵ = 102386489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102386521.

It is not an unprimeable number, because it can be changed into a prime (102386527) 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, 21286 + ... + 25648.

It is an arithmetic number, because the mean of its divisors is an integer number (13231648).

Almost surely, 2^102386521 is an apocalyptic number.

It is an amenable number.

102386521 is a deficient number, since it is larger than the sum of its proper divisors (3466663).

102386521 is an equidigital number, since it uses as much as digits as its factorization.

102386521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 102386521 is about 10118.6224852991. The cubic root of 102386521 is about 467.8223096950.

The spelling of 102386521 in words is "one hundred two million, three hundred eighty-six thousand, five hundred twenty-one".