105559591 has 2 divisors, whose sum is σ = 105559592. Its totient is φ = 105559590.

The previous prime is 105559589. The next prime is 105559621. The reversal of 105559591 is 195955501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105559591 - 2¹ = 105559589 is a prime.

It is a super-2 number, since 2×105559591² = 22285654504174562, which contains 22 as substring.

Together with 105559589, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105559501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52779795 + 52779796.

It is an arithmetic number, because the mean of its divisors is an integer number (52779796).

Almost surely, 2^105559591 is an apocalyptic number.

105559591 is a deficient number, since it is larger than the sum of its proper divisors (1).

105559591 is an equidigital number, since it uses as much as digits as its factorization.

105559591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50625, while the sum is 40.

The square root of 105559591 is about 10274.2197270644. The cubic root of 105559591 is about 472.6060021778.

The spelling of 105559591 in words is "one hundred five million, five hundred fifty-nine thousand, five hundred ninety-one".