987101 has 2 divisors, whose sum is σ = 987102. Its totient is φ = 987100.

The previous prime is 987097. The next prime is 987127. The reversal of 987101 is 101789.

It is an a-pointer prime, because the next prime (987127) can be obtained adding 987101 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 75076 = 955^2 + 274^2 .

It is an emirp because it is prime and its reverse (101789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987101 - 2² = 987097 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493550 + 493551.

It is an arithmetic number, because the mean of its divisors is an integer number (493551).

2⁹⁸⁷¹⁰¹ is an apocalyptic number.

It is an amenable number.

987101 is a deficient number, since it is larger than the sum of its proper divisors (1).

987101 is an equidigital number, since it uses as much as digits as its factorization.

987101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 987101 is about 993.5295667468. The cubic root of 987101 is about 99.5681712569.

The spelling of 987101 in words is "nine hundred eighty-seven thousand, one hundred one".