98915261 has 2 divisors, whose sum is σ = 98915262. Its totient is φ = 98915260.

The previous prime is 98915239. The next prime is 98915263. The reversal of 98915261 is 16251989.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65205625 + 33709636 = 8075^2 + 5806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98915261 is a prime.

Together with 98915263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98915263) 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, 49457630 + 49457631.

It is an arithmetic number, because the mean of its divisors is an integer number (49457631).

Almost surely, 2^98915261 is an apocalyptic number.

It is an amenable number.

98915261 is a deficient number, since it is larger than the sum of its proper divisors (1).

98915261 is an equidigital number, since it uses as much as digits as its factorization.

98915261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 41.

The square root of 98915261 is about 9945.6151644833. The cubic root of 98915261 is about 462.4744739747.

The spelling of 98915261 in words is "ninety-eight million, nine hundred fifteen thousand, two hundred sixty-one".