97881071 has 2 divisors, whose sum is σ = 97881072. Its totient is φ = 97881070.

The previous prime is 97881013. The next prime is 97881109. The reversal of 97881071 is 17018879.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97881071 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 (97881571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48940535 + 48940536.

It is an arithmetic number, because the mean of its divisors is an integer number (48940536).

Almost surely, 2^97881071 is an apocalyptic number.

97881071 is a deficient number, since it is larger than the sum of its proper divisors (1).

97881071 is an equidigital number, since it uses as much as digits as its factorization.

97881071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 97881071 is about 9893.4862914950. The cubic root of 97881071 is about 460.8570521542.

The spelling of 97881071 in words is "ninety-seven million, eight hundred eighty-one thousand, seventy-one".