105115279 has 2 divisors, whose sum is σ = 105115280. Its totient is φ = 105115278.

The previous prime is 105115273. The next prime is 105115321. The reversal of 105115279 is 972511501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105115279 - 2⁷ = 105115151 is a prime.

It is a super-2 number, since 2×105115279² = 22098443758495682, 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 105115279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105115273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52557639 + 52557640.

It is an arithmetic number, because the mean of its divisors is an integer number (52557640).

Almost surely, 2^105115279 is an apocalyptic number.

105115279 is a deficient number, since it is larger than the sum of its proper divisors (1).

105115279 is an equidigital number, since it uses as much as digits as its factorization.

105115279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 105115279 is about 10252.5742621061. The cubic root of 105115279 is about 471.9419860111.

The spelling of 105115279 in words is "one hundred five million, one hundred fifteen thousand, two hundred seventy-nine".