97542197 has 2 divisors, whose sum is σ = 97542198. Its totient is φ = 97542196.

The previous prime is 97542191. The next prime is 97542199. The reversal of 97542197 is 79124579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51179716 + 46362481 = 7154^2 + 6809^2 .

It is a cyclic number.

It is not a de Polignac number, because 97542197 - 2¹⁶ = 97476661 is a prime.

Together with 97542199, 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 (97542191) 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, 48771098 + 48771099.

It is an arithmetic number, because the mean of its divisors is an integer number (48771099).

Almost surely, 2^97542197 is an apocalyptic number.

It is an amenable number.

97542197 is a deficient number, since it is larger than the sum of its proper divisors (1).

97542197 is an equidigital number, since it uses as much as digits as its factorization.

97542197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 97542197 is about 9876.3453260809. The cubic root of 97542197 is about 460.3245928926.

The spelling of 97542197 in words is "ninety-seven million, five hundred forty-two thousand, one hundred ninety-seven".