16881097 has 2 divisors, whose sum is σ = 16881098. Its totient is φ = 16881096.

The previous prime is 16881077. The next prime is 16881169. The reversal of 16881097 is 79018861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16491721 + 389376 = 4061^2 + 624^2 .

It is an emirp because it is prime and its reverse (79018861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16881097 - 2²³ = 8492489 is a prime.

It is not a weakly prime, because it can be changed into another prime (16881047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8440548 + 8440549.

It is an arithmetic number, because the mean of its divisors is an integer number (8440549).

Almost surely, 2^16881097 is an apocalyptic number.

It is an amenable number.

16881097 is a deficient number, since it is larger than the sum of its proper divisors (1).

16881097 is an equidigital number, since it uses as much as digits as its factorization.

16881097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16881097 is about 4108.6612174771. The cubic root of 16881097 is about 256.5272793140.

The spelling of 16881097 in words is "sixteen million, eight hundred eighty-one thousand, ninety-seven".