9797551 has 2 divisors, whose sum is σ = 9797552. Its totient is φ = 9797550.

The previous prime is 9797533. The next prime is 9797603. The reversal of 9797551 is 1557979.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9797551 - 2¹³ = 9789359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9797498 and 9797507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9797531) 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, 4898775 + 4898776.

It is an arithmetic number, because the mean of its divisors is an integer number (4898776).

Almost surely, 2^9797551 is an apocalyptic number.

9797551 is a deficient number, since it is larger than the sum of its proper divisors (1).

9797551 is an equidigital number, since it uses as much as digits as its factorization.

9797551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99225, while the sum is 43.

The square root of 9797551 is about 3130.1039918827. The cubic root of 9797551 is about 213.9796687821.

The spelling of 9797551 in words is "nine million, seven hundred ninety-seven thousand, five hundred fifty-one".