102550417 has 2 divisors, whose sum is σ = 102550418. Its totient is φ = 102550416.

The previous prime is 102550397. The next prime is 102550439. The reversal of 102550417 is 714055201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102232321 + 318096 = 10111^2 + 564^2 .

It is an emirp because it is prime and its reverse (714055201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102550417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102550391 and 102550400.

It is not a weakly prime, because it can be changed into another prime (102553417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51275208 + 51275209.

It is an arithmetic number, because the mean of its divisors is an integer number (51275209).

Almost surely, 2^102550417 is an apocalyptic number.

It is an amenable number.

102550417 is a deficient number, since it is larger than the sum of its proper divisors (1).

102550417 is an equidigital number, since it uses as much as digits as its factorization.

102550417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 102550417 is about 10126.7179777063. The cubic root of 102550417 is about 468.0717999879.

The spelling of 102550417 in words is "one hundred two million, five hundred fifty thousand, four hundred seventeen".