105695521 has 2 divisors, whose sum is σ = 105695522. Its totient is φ = 105695520.

The previous prime is 105695519. The next prime is 105695549. The reversal of 105695521 is 125596501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56415121 + 49280400 = 7511^2 + 7020^2 .

It is a cyclic number.

It is not a de Polignac number, because 105695521 - 2¹ = 105695519 is a prime.

It is a super-2 number, since 2×105695521² = 22343086318922882, which contains 22 as substring.

Together with 105695519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (105695501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52847760 + 52847761.

It is an arithmetic number, because the mean of its divisors is an integer number (52847761).

Almost surely, 2^105695521 is an apocalyptic number.

It is an amenable number.

105695521 is a deficient number, since it is larger than the sum of its proper divisors (1).

105695521 is an equidigital number, since it uses as much as digits as its factorization.

105695521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 105695521 is about 10280.8326997379. The cubic root of 105695521 is about 472.8087747801.

The spelling of 105695521 in words is "one hundred five million, six hundred ninety-five thousand, five hundred twenty-one".