97297553 has 2 divisors, whose sum is σ = 97297554. Its totient is φ = 97297552.

The previous prime is 97297547. The next prime is 97297583. The reversal of 97297553 is 35579279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53114944 + 44182609 = 7288^2 + 6647^2 .

It is an emirp because it is prime and its reverse (35579279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97297553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97297498 and 97297507.

It is not a weakly prime, because it can be changed into another prime (97297583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48648776 + 48648777.

It is an arithmetic number, because the mean of its divisors is an integer number (48648777).

Almost surely, 2^97297553 is an apocalyptic number.

It is an amenable number.

97297553 is a deficient number, since it is larger than the sum of its proper divisors (1).

97297553 is an equidigital number, since it uses as much as digits as its factorization.

97297553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 595350, while the sum is 47.

The square root of 97297553 is about 9863.9521998031. The cubic root of 97297553 is about 459.9394264915.

The spelling of 97297553 in words is "ninety-seven million, two hundred ninety-seven thousand, five hundred fifty-three".