105526991 has 2 divisors, whose sum is σ = 105526992. Its totient is φ = 105526990.

The previous prime is 105526963. The next prime is 105526999. The reversal of 105526991 is 199625501.

It is a strong prime.

It is an emirp because it is prime and its reverse (199625501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105526991 - 2¹⁰ = 105525967 is a prime.

It is a super-2 number, since 2×105526991² = 22271891659028162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105526999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52763495 + 52763496.

It is an arithmetic number, because the mean of its divisors is an integer number (52763496).

Almost surely, 2^105526991 is an apocalyptic number.

105526991 is a deficient number, since it is larger than the sum of its proper divisors (1).

105526991 is an equidigital number, since it uses as much as digits as its factorization.

105526991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 105526991 is about 10272.6331093834. The cubic root of 105526991 is about 472.5573454843.

The spelling of 105526991 in words is "one hundred five million, five hundred twenty-six thousand, nine hundred ninety-one".