105250279 has 2 divisors, whose sum is σ = 105250280. Its totient is φ = 105250278.

The previous prime is 105250267. The next prime is 105250297. The reversal of 105250279 is 972052501.

Together with next prime (105250297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105250279 - 2¹⁷ = 105119207 is a prime.

It is a super-2 number, since 2×105250279² = 22155242459155682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105250279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105250219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52625139 + 52625140.

It is an arithmetic number, because the mean of its divisors is an integer number (52625140).

Almost surely, 2^105250279 is an apocalyptic number.

105250279 is a deficient number, since it is larger than the sum of its proper divisors (1).

105250279 is an equidigital number, since it uses as much as digits as its factorization.

105250279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 105250279 is about 10259.1558619606. The cubic root of 105250279 is about 472.1439386130.

The spelling of 105250279 in words is "one hundred five million, two hundred fifty thousand, two hundred seventy-nine".