97916237 has 2 divisors, whose sum is σ = 97916238. Its totient is φ = 97916236.

The previous prime is 97916213. The next prime is 97916239. The reversal of 97916237 is 73261979.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91795561 + 6120676 = 9581^2 + 2474^2 .

It is a cyclic number.

It is not a de Polignac number, because 97916237 - 2⁸ = 97915981 is a prime.

Together with 97916239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97916239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48958118 + 48958119.

It is an arithmetic number, because the mean of its divisors is an integer number (48958119).

Almost surely, 2^97916237 is an apocalyptic number.

It is an amenable number.

97916237 is a deficient number, since it is larger than the sum of its proper divisors (1).

97916237 is an equidigital number, since it uses as much as digits as its factorization.

97916237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 97916237 is about 9895.2633618313. The cubic root of 97916237 is about 460.9122366703.

The spelling of 97916237 in words is "ninety-seven million, nine hundred sixteen thousand, two hundred thirty-seven".