98081257 has 2 divisors, whose sum is σ = 98081258. Its totient is φ = 98081256.

The previous prime is 98081251. The next prime is 98081261. The reversal of 98081257 is 75218089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87815641 + 10265616 = 9371^2 + 3204^2 .

It is a cyclic number.

It is not a de Polignac number, because 98081257 - 2⁷ = 98081129 is a prime.

It is not a weakly prime, because it can be changed into another prime (98081251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49040628 + 49040629.

It is an arithmetic number, because the mean of its divisors is an integer number (49040629).

Almost surely, 2^98081257 is an apocalyptic number.

It is an amenable number.

98081257 is a deficient number, since it is larger than the sum of its proper divisors (1).

98081257 is an equidigital number, since it uses as much as digits as its factorization.

98081257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 98081257 is about 9903.5981844984. The cubic root of 98081257 is about 461.1710192492.

The spelling of 98081257 in words is "ninety-eight million, eighty-one thousand, two hundred fifty-seven".