102056291 has 2 divisors, whose sum is σ = 102056292. Its totient is φ = 102056290.

The previous prime is 102056281. The next prime is 102056293. The reversal of 102056291 is 192650201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102056291 is a prime.

It is a Sophie Germain prime.

Together with 102056293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102056291.

It is not a weakly prime, because it can be changed into another prime (102056293) 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, 51028145 + 51028146.

It is an arithmetic number, because the mean of its divisors is an integer number (51028146).

Almost surely, 2^102056291 is an apocalyptic number.

102056291 is a deficient number, since it is larger than the sum of its proper divisors (1).

102056291 is an equidigital number, since it uses as much as digits as its factorization.

102056291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 102056291 is about 10102.2913737429. The cubic root of 102056291 is about 467.3188080279.

The spelling of 102056291 in words is "one hundred two million, fifty-six thousand, two hundred ninety-one".