97765901 has 2 divisors, whose sum is σ = 97765902. Its totient is φ = 97765900.

The previous prime is 97765831. The next prime is 97765919. The reversal of 97765901 is 10956779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72505225 + 25260676 = 8515^2 + 5026^2 .

It is an emirp because it is prime and its reverse (10956779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97765901 - 2²⁶ = 30657037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97765991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48882950 + 48882951.

It is an arithmetic number, because the mean of its divisors is an integer number (48882951).

Almost surely, 2^97765901 is an apocalyptic number.

It is an amenable number.

97765901 is a deficient number, since it is larger than the sum of its proper divisors (1).

97765901 is an equidigital number, since it uses as much as digits as its factorization.

97765901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 97765901 is about 9887.6640820772. The cubic root of 97765901 is about 460.6762281634.

The spelling of 97765901 in words is "ninety-seven million, seven hundred sixty-five thousand, nine hundred one".