97261897 has 2 divisors, whose sum is σ = 97261898. Its totient is φ = 97261896.

The previous prime is 97261891. The next prime is 97261909. The reversal of 97261897 is 79816279.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85729081 + 11532816 = 9259^2 + 3396^2 .

It is a cyclic number.

It is not a de Polignac number, because 97261897 - 2¹⁵ = 97229129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97261897.

It is not a weakly prime, because it can be changed into another prime (97261891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48630948 + 48630949.

It is an arithmetic number, because the mean of its divisors is an integer number (48630949).

Almost surely, 2^97261897 is an apocalyptic number.

It is an amenable number.

97261897 is a deficient number, since it is larger than the sum of its proper divisors (1).

97261897 is an equidigital number, since it uses as much as digits as its factorization.

97261897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 97261897 is about 9862.1446450557. The cubic root of 97261897 is about 459.8832359592.

The spelling of 97261897 in words is "ninety-seven million, two hundred sixty-one thousand, eight hundred ninety-seven".