105779591 has 2 divisors, whose sum is σ = 105779592. Its totient is φ = 105779590.

The previous prime is 105779579. The next prime is 105779629. The reversal of 105779591 is 195977501.

It is a weak prime.

It is an emirp because it is prime and its reverse (195977501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105779591 - 2²⁶ = 38670727 is a prime.

It is a super-2 number, since 2×105779591² = 22378643744254562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105779521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52889795 + 52889796.

It is an arithmetic number, because the mean of its divisors is an integer number (52889796).

Almost surely, 2^105779591 is an apocalyptic number.

105779591 is a deficient number, since it is larger than the sum of its proper divisors (1).

105779591 is an equidigital number, since it uses as much as digits as its factorization.

105779591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99225, while the sum is 44.

The square root of 105779591 is about 10284.9205636213. The cubic root of 105779591 is about 472.9340986008.

The spelling of 105779591 in words is "one hundred five million, seven hundred seventy-nine thousand, five hundred ninety-one".