105950921 has 2 divisors, whose sum is σ = 105950922. Its totient is φ = 105950920.

The previous prime is 105950917. The next prime is 105950927. The reversal of 105950921 is 129059501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90935296 + 15015625 = 9536^2 + 3875^2 .

It is an emirp because it is prime and its reverse (129059501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105950921 - 2² = 105950917 is a prime.

It is a super-2 number, since 2×105950921² = 22451195321496482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105950927) 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, 52975460 + 52975461.

It is an arithmetic number, because the mean of its divisors is an integer number (52975461).

Almost surely, 2^105950921 is an apocalyptic number.

It is an amenable number.

105950921 is a deficient number, since it is larger than the sum of its proper divisors (1).

105950921 is an equidigital number, since it uses as much as digits as its factorization.

105950921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 105950921 is about 10293.2463780869. The cubic root of 105950921 is about 473.1892961963.

The spelling of 105950921 in words is "one hundred five million, nine hundred fifty thousand, nine hundred twenty-one".