980101 has 4 divisors (see below), whose sum is σ = 1037772. Its totient is φ = 922432.

The previous prime is 980081. The next prime is 980107. The reversal of 980101 is 101089.

980101 = 153² + 154² + ... + 186².

It is a Cunningham number, because it is equal to 990²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763876 + 216225 = 874^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 980101 - 2⁵ = 980069 is a prime.

It is a Duffinian number.

980101 is a modest number, since divided by 101 gives 98 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980107) 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 3 ways as a sum of consecutive naturals, for example, 28810 + ... + 28843.

It is an arithmetic number, because the mean of its divisors is an integer number (259443).

2⁹⁸⁰¹⁰¹ is an apocalyptic number.

It is an amenable number.

980101 is a deficient number, since it is larger than the sum of its proper divisors (57671).

980101 is a wasteful number, since it uses less digits than its factorization.

980101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57670.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 980101 is about 990.0005050504. Note that the first 3 decimals coincide. The cubic root of 980101 is about 99.3322510380.

It can be divided in two parts, 980 and 101, that added together give a triangular number (1081 = T₄₆).

The spelling of 980101 in words is "nine hundred eighty thousand, one hundred one".