17980101 has 12 divisors (see below), whose sum is σ = 27499212. Its totient is φ = 11281536.

The previous prime is 17980057. The next prime is 17980103. The reversal of 17980101 is 10108971.

It can be written as a sum of positive squares in 2 ways, for example, as 8208225 + 9771876 = 2865^2 + 3126^2 .

It is not a de Polignac number, because 17980101 - 2¹¹ = 17978053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17980103) 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, 58606 + ... + 58911.

It is an arithmetic number, because the mean of its divisors is an integer number (2291601).

Almost surely, 2^17980101 is an apocalyptic number.

It is an amenable number.

17980101 is a deficient number, since it is larger than the sum of its proper divisors (9519111).

17980101 is a wasteful number, since it uses less digits than its factorization.

17980101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117540 (or 117537 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 17980101 is about 4240.2949189885. The cubic root of 17980101 is about 261.9775294910.

It can be divided in two parts, 17980 and 101, that added together give a palindrome (18081).

The spelling of 17980101 in words is "seventeen million, nine hundred eighty thousand, one hundred one".