101860091 has 2 divisors, whose sum is σ = 101860092. Its totient is φ = 101860090.

The previous prime is 101860081. The next prime is 101860097. The reversal of 101860091 is 190068101.

It is a strong prime.

It is an emirp because it is prime and its reverse (190068101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101860091 - 2⁶ = 101860027 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101860091.

It is not a weakly prime, because it can be changed into another prime (101860097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50930045 + 50930046.

It is an arithmetic number, because the mean of its divisors is an integer number (50930046).

Almost surely, 2^101860091 is an apocalyptic number.

101860091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101860091 is an equidigital number, since it uses as much as digits as its factorization.

101860091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 101860091 is about 10092.5760338974. The cubic root of 101860091 is about 467.0191473609.

The spelling of 101860091 in words is "one hundred one million, eight hundred sixty thousand, ninety-one".