102050809 has 8 divisors (see below), whose sum is σ = 116896320. Its totient is φ = 87272016.

The previous prime is 102050803. The next prime is 102050831. The reversal of 102050809 is 908050201.

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 102050809 - 2⁵ = 102050777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102050803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13354 + ... + 19555.

It is an arithmetic number, because the mean of its divisors is an integer number (14612040).

Almost surely, 2^102050809 is an apocalyptic number.

It is an amenable number.

102050809 is a deficient number, since it is larger than the sum of its proper divisors (14845511).

102050809 is an equidigital number, since it uses as much as digits as its factorization.

102050809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33359.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 102050809 is about 10102.0200455156. The cubic root of 102050809 is about 467.3104404641.

The spelling of 102050809 in words is "one hundred two million, fifty thousand, eight hundred nine".