102250081 has 2 divisors, whose sum is σ = 102250082. Its totient is φ = 102250080.

The previous prime is 102250061. The next prime is 102250123. The reversal of 102250081 is 180052201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101909025 + 341056 = 10095^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 102250081 - 2⁹ = 102249569 is a prime.

It is a super-2 number, since 2×102250081² = 20910158129013122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102250061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51125040 + 51125041.

It is an arithmetic number, because the mean of its divisors is an integer number (51125041).

Almost surely, 2^102250081 is an apocalyptic number.

It is an amenable number.

102250081 is a deficient number, since it is larger than the sum of its proper divisors (1).

102250081 is an equidigital number, since it uses as much as digits as its factorization.

102250081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 102250081 is about 10111.8782132698. The cubic root of 102250081 is about 467.6144110726.

The spelling of 102250081 in words is "one hundred two million, two hundred fifty thousand, eighty-one".