102851089 has 6 divisors (see below), whose sum is σ = 113051330. Its totient is φ = 93500880.

The previous prime is 102851069. The next prime is 102851117. The reversal of 102851089 is 980158201.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 47720464 = 7425^2 + 6908^2 .

It is not a de Polignac number, because 102851089 - 2⁵ = 102851057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102851069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424884 + ... + 425125.

Almost surely, 2^102851089 is an apocalyptic number.

It is an amenable number.

102851089 is a deficient number, since it is larger than the sum of its proper divisors (10200241).

102851089 is an equidigital number, since it uses as much as digits as its factorization.

102851089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850031 (or 850020 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 102851089 is about 10141.5525931684. The cubic root of 102851089 is about 468.5288069528.

The spelling of 102851089 in words is "one hundred two million, eight hundred fifty-one thousand, eighty-nine".