97102081 has 2 divisors, whose sum is σ = 97102082. Its totient is φ = 97102080.

The previous prime is 97102043. The next prime is 97102091. The reversal of 97102081 is 18020179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96353856 + 748225 = 9816^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 97102081 - 2²¹ = 95004929 is a prime.

It is a super-2 number, since 2×97102081² = 18857628269061122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97102091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48551040 + 48551041.

It is an arithmetic number, because the mean of its divisors is an integer number (48551041).

Almost surely, 2^97102081 is an apocalyptic number.

It is an amenable number.

97102081 is a deficient number, since it is larger than the sum of its proper divisors (1).

97102081 is an equidigital number, since it uses as much as digits as its factorization.

97102081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 97102081 is about 9854.0388166477. The cubic root of 97102081 is about 459.6312119783.

The spelling of 97102081 in words is "ninety-seven million, one hundred two thousand, eighty-one".