97861529 has 2 divisors, whose sum is σ = 97861530. Its totient is φ = 97861528.

The previous prime is 97861459. The next prime is 97861531. The reversal of 97861529 is 92516879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83814025 + 14047504 = 9155^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 97861529 - 2²⁰ = 96812953 is a prime.

Together with 97861531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97861549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48930764 + 48930765.

It is an arithmetic number, because the mean of its divisors is an integer number (48930765).

Almost surely, 2^97861529 is an apocalyptic number.

It is an amenable number.

97861529 is a deficient number, since it is larger than the sum of its proper divisors (1).

97861529 is an equidigital number, since it uses as much as digits as its factorization.

97861529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The square root of 97861529 is about 9892.4986226939. The cubic root of 97861529 is about 460.8263800067.

The spelling of 97861529 in words is "ninety-seven million, eight hundred sixty-one thousand, five hundred twenty-nine".