100559591 has 6 divisors (see below), whose sum is σ = 110532576. Its totient is φ = 91417700.

The previous prime is 100559579. The next prime is 100559623. The reversal of 100559591 is 195955001.

It is a happy number.

It is not a de Polignac number, because 100559591 - 2⁶ = 100559527 is a prime.

It is a super-2 number, since 2×100559591² = 20224462684174562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100559561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415415 + ... + 415656.

It is an arithmetic number, because the mean of its divisors is an integer number (18422096).

Almost surely, 2^100559591 is an apocalyptic number.

100559591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100559591 is a deficient number, since it is larger than the sum of its proper divisors (9972985).

100559591 is an equidigital number, since it uses as much as digits as its factorization.

100559591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831093 (or 831082 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 35.

The square root of 100559591 is about 10027.9405163772. The cubic root of 100559591 is about 465.0230705014.

The spelling of 100559591 in words is "one hundred million, five hundred fifty-nine thousand, five hundred ninety-one".