97746521 has 2 divisors, whose sum is σ = 97746522. Its totient is φ = 97746520.

The previous prime is 97746449. The next prime is 97746569. The reversal of 97746521 is 12564779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93702400 + 4044121 = 9680^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 97746521 - 2¹⁰ = 97745497 is a prime.

It is not a weakly prime, because it can be changed into another prime (97746581) 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, 48873260 + 48873261.

It is an arithmetic number, because the mean of its divisors is an integer number (48873261).

Almost surely, 2^97746521 is an apocalyptic number.

It is an amenable number.

97746521 is a deficient number, since it is larger than the sum of its proper divisors (1).

97746521 is an equidigital number, since it uses as much as digits as its factorization.

97746521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 97746521 is about 9886.6840244847. The cubic root of 97746521 is about 460.6457864136.

The spelling of 97746521 in words is "ninety-seven million, seven hundred forty-six thousand, five hundred twenty-one".