108571997 has 2 divisors, whose sum is σ = 108571998. Its totient is φ = 108571996.

The previous prime is 108571987. The next prime is 108572017. The reversal of 108571997 is 799175801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92659876 + 15912121 = 9626^2 + 3989^2 .

It is an emirp because it is prime and its reverse (799175801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108571997 - 2⁶ = 108571933 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 (108571987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54285998 + 54285999.

It is an arithmetic number, because the mean of its divisors is an integer number (54285999).

Almost surely, 2^108571997 is an apocalyptic number.

It is an amenable number.

108571997 is a deficient number, since it is larger than the sum of its proper divisors (1).

108571997 is an equidigital number, since it uses as much as digits as its factorization.

108571997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 108571997 is about 10419.7887214665. The cubic root of 108571997 is about 477.0595659197.

The spelling of 108571997 in words is "one hundred eight million, five hundred seventy-one thousand, nine hundred ninety-seven".