97902641 has 2 divisors, whose sum is σ = 97902642. Its totient is φ = 97902640.

The previous prime is 97902631. The next prime is 97902647. The reversal of 97902641 is 14620979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79584241 + 18318400 = 8921^2 + 4280^2 .

It is an emirp because it is prime and its reverse (14620979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97902641 - 2⁶ = 97902577 is a prime.

It is a super-2 number, since 2×97902641² = 19169854229549762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97902595 and 97902604.

It is not a weakly prime, because it can be changed into another prime (97902647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48951320 + 48951321.

It is an arithmetic number, because the mean of its divisors is an integer number (48951321).

Almost surely, 2^97902641 is an apocalyptic number.

It is an amenable number.

97902641 is a deficient number, since it is larger than the sum of its proper divisors (1).

97902641 is an equidigital number, since it uses as much as digits as its factorization.

97902641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 97902641 is about 9894.5763426233. The cubic root of 97902641 is about 460.8909026096.

The spelling of 97902641 in words is "ninety-seven million, nine hundred two thousand, six hundred forty-one".