97217387 has 2 divisors, whose sum is σ = 97217388. Its totient is φ = 97217386.

The previous prime is 97217369. The next prime is 97217411. The reversal of 97217387 is 78371279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97217387 - 2¹⁴ = 97201003 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (97217287) 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, 48608693 + 48608694.

It is an arithmetic number, because the mean of its divisors is an integer number (48608694).

Almost surely, 2^97217387 is an apocalyptic number.

97217387 is a deficient number, since it is larger than the sum of its proper divisors (1).

97217387 is an equidigital number, since it uses as much as digits as its factorization.

97217387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 97217387 is about 9859.8877782660. The cubic root of 97217387 is about 459.8130730734.

The spelling of 97217387 in words is "ninety-seven million, two hundred seventeen thousand, three hundred eighty-seven".