102785851 has 16 divisors (see below), whose sum is σ = 120821760. Its totient is φ = 85615200.

The previous prime is 102785849. The next prime is 102785897. The reversal of 102785851 is 158587201.

It is not a de Polignac number, because 102785851 - 2¹ = 102785849 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 102785851.

It is not an unprimeable number, because it can be changed into a prime (102785651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48645 + ... + 50713.

It is an arithmetic number, because the mean of its divisors is an integer number (7551360).

Almost surely, 2^102785851 is an apocalyptic number.

102785851 is a deficient number, since it is larger than the sum of its proper divisors (18035909).

102785851 is a wasteful number, since it uses less digits than its factorization.

102785851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274.

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 102785851 is about 10138.3357115456. The cubic root of 102785851 is about 468.4297240700.

It can be divided in two parts, 10278 and 5851, that added together give a square (16129 = 127²).

The spelling of 102785851 in words is "one hundred two million, seven hundred eighty-five thousand, eight hundred fifty-one".