101980589 has 2 divisors, whose sum is σ = 101980590. Its totient is φ = 101980588.

The previous prime is 101980577. The next prime is 101980591. The reversal of 101980589 is 985089101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 10778089 = 9550^2 + 3283^2 .

It is an emirp because it is prime and its reverse (985089101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101980589 - 2¹² = 101976493 is a prime.

It is a Sophie Germain prime.

Together with 101980591, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_5868932 and since 101980589 and 5868932 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101980289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50990294 + 50990295.

It is an arithmetic number, because the mean of its divisors is an integer number (50990295).

Almost surely, 2^101980589 is an apocalyptic number.

It is an amenable number.

101980589 is a deficient number, since it is larger than the sum of its proper divisors (1).

101980589 is an equidigital number, since it uses as much as digits as its factorization.

101980589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 101980589 is about 10098.5439049400. The cubic root of 101980589 is about 467.2032322059.

The spelling of 101980589 in words is "one hundred one million, nine hundred eighty thousand, five hundred eighty-nine".