105818501 has 2 divisors, whose sum is σ = 105818502. Its totient is φ = 105818500.

The previous prime is 105818497. The next prime is 105818509.

105818501 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 1267876 = 10225^2 + 1126^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 105818501 - 2² = 105818497 is a prime.

It is a super-2 number, since 2×105818501² = 22395110307774002, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105818509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52909250 + 52909251.

It is an arithmetic number, because the mean of its divisors is an integer number (52909251).

Almost surely, 2^105818501 is an apocalyptic number.

It is an amenable number.

105818501 is a deficient number, since it is larger than the sum of its proper divisors (1).

105818501 is an equidigital number, since it uses as much as digits as its factorization.

105818501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 105818501 is about 10286.8119940048. The cubic root of 105818501 is about 472.9920795709.

It can be divided in two parts, 105 and 818501, that multiplied together give a triangular number (85942605 = T₁₃₁₁₀).

The spelling of 105818501 in words is "one hundred five million, eight hundred eighteen thousand, five hundred one".