10109591 has 12 divisors (see below), whose sum is σ = 10650360. Its totient is φ = 9590880.

The previous prime is 10109573. The next prime is 10109597. The reversal of 10109591 is 19590101.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-10109591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10109591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10109597) 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 in 11 ways as a sum of consecutive naturals, for example, 165701 + ... + 165761.

It is an arithmetic number, because the mean of its divisors is an integer number (887530).

Almost surely, 2^10109591 is an apocalyptic number.

10109591 is a deficient number, since it is larger than the sum of its proper divisors (540769).

10109591 is an frugal number, since it uses more digits than its factorization.

10109591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 10109591 is about 3179.5583026578. The cubic root of 10109591 is about 216.2276335360.

Adding to 10109591 its reverse (19590101), we get a palindrome (29699692).

It can be divided in two parts, 1010 and 9591, that added together give a palindrome (10601).

The spelling of 10109591 in words is "ten million, one hundred nine thousand, five hundred ninety-one".