102050869 has 2 divisors, whose sum is σ = 102050870. Its totient is φ = 102050868.

The previous prime is 102050867. The next prime is 102050899. The reversal of 102050869 is 968050201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88078225 + 13972644 = 9385^2 + 3738^2 .

It is a cyclic number.

It is not a de Polignac number, because 102050869 - 2¹ = 102050867 is a prime.

It is a super-2 number, since 2×102050869² = 20828759727310322, which contains 22 as substring.

Together with 102050867, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102050869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102050867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51025434 + 51025435.

It is an arithmetic number, because the mean of its divisors is an integer number (51025435).

Almost surely, 2^102050869 is an apocalyptic number.

It is an amenable number.

102050869 is a deficient number, since it is larger than the sum of its proper divisors (1).

102050869 is an equidigital number, since it uses as much as digits as its factorization.

102050869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 102050869 is about 10102.0230152183. The cubic root of 102050869 is about 467.3105320479.

The spelling of 102050869 in words is "one hundred two million, fifty thousand, eight hundred sixty-nine".