9805157 has 2 divisors, whose sum is σ = 9805158. Its totient is φ = 9805156.

The previous prime is 9805099. The next prime is 9805163. The reversal of 9805157 is 7515089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9740641 + 64516 = 3121^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 9805157 - 2⁸ = 9804901 is a prime.

It is a super-2 number, since 2×9805157² = 192282207589298, which contains 22 as substring.

It is equal to p₆₅₂₅₉₈ and since 9805157 and 652598 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9805177) 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, 4902578 + 4902579.

It is an arithmetic number, because the mean of its divisors is an integer number (4902579).

Almost surely, 2^9805157 is an apocalyptic number.

It is an amenable number.

9805157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9805157 is an equidigital number, since it uses as much as digits as its factorization.

9805157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 9805157 is about 3131.3187317806. The cubic root of 9805157 is about 214.0350264384.

The spelling of 9805157 in words is "nine million, eight hundred five thousand, one hundred fifty-seven".