98097557 has 2 divisors, whose sum is σ = 98097558. Its totient is φ = 98097556.

The previous prime is 98097533. The next prime is 98097607. The reversal of 98097557 is 75579089.

It is an a-pointer prime, because the next prime (98097607) can be obtained adding 98097557 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60078001 + 38019556 = 7751^2 + 6166^2 .

It is an emirp because it is prime and its reverse (75579089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98097557 - 2¹⁶ = 98032021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98097257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49048778 + 49048779.

It is an arithmetic number, because the mean of its divisors is an integer number (49048779).

Almost surely, 2^98097557 is an apocalyptic number.

It is an amenable number.

98097557 is a deficient number, since it is larger than the sum of its proper divisors (1).

98097557 is an equidigital number, since it uses as much as digits as its factorization.

98097557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 98097557 is about 9904.4210835364. The cubic root of 98097557 is about 461.1965649769.

The spelling of 98097557 in words is "ninety-eight million, ninety-seven thousand, five hundred fifty-seven".