102256447 has 2 divisors, whose sum is σ = 102256448. Its totient is φ = 102256446.

The previous prime is 102256439. The next prime is 102256457. The reversal of 102256447 is 744652201.

It is a weak prime.

It is an emirp because it is prime and its reverse (744652201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102256447 - 2³ = 102256439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102256417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51128223 + 51128224.

It is an arithmetic number, because the mean of its divisors is an integer number (51128224).

Almost surely, 2^102256447 is an apocalyptic number.

102256447 is a deficient number, since it is larger than the sum of its proper divisors (1).

102256447 is an equidigital number, since it uses as much as digits as its factorization.

102256447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 102256447 is about 10112.1929866869. The cubic root of 102256447 is about 467.6241152916.

The spelling of 102256447 in words is "one hundred two million, two hundred fifty-six thousand, four hundred forty-seven".