97538321 has 2 divisors, whose sum is σ = 97538322. Its totient is φ = 97538320.

The previous prime is 97538297. The next prime is 97538341. The reversal of 97538321 is 12383579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 6431296 = 9545^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 97538321 - 2⁶ = 97538257 is a prime.

It is not a weakly prime, because it can be changed into another prime (97538341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48769160 + 48769161.

It is an arithmetic number, because the mean of its divisors is an integer number (48769161).

Almost surely, 2^97538321 is an apocalyptic number.

It is an amenable number.

97538321 is a deficient number, since it is larger than the sum of its proper divisors (1).

97538321 is an equidigital number, since it uses as much as digits as its factorization.

97538321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 97538321 is about 9876.1490977000. The cubic root of 97538321 is about 460.3184955597.

The spelling of 97538321 in words is "ninety-seven million, five hundred thirty-eight thousand, three hundred twenty-one".