105280447 has 2 divisors, whose sum is σ = 105280448. Its totient is φ = 105280446.

The previous prime is 105280391. The next prime is 105280451. The reversal of 105280447 is 744082501.

It is a strong prime.

It is an emirp because it is prime and its reverse (744082501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105280447 is a prime.

It is a super-2 number, since 2×105280447² = 22167945041039618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105280477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52640223 + 52640224.

It is an arithmetic number, because the mean of its divisors is an integer number (52640224).

Almost surely, 2^105280447 is an apocalyptic number.

105280447 is a deficient number, since it is larger than the sum of its proper divisors (1).

105280447 is an equidigital number, since it uses as much as digits as its factorization.

105280447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 105280447 is about 10260.6260530243. The cubic root of 105280447 is about 472.1890446776.

The spelling of 105280447 in words is "one hundred five million, two hundred eighty thousand, four hundred forty-seven".