9974551 has 2 divisors, whose sum is σ = 9974552. Its totient is φ = 9974550.

The previous prime is 9974527. The next prime is 9974557. The reversal of 9974551 is 1554799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9974551 - 2⁹ = 9974039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9974557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4987275 + 4987276.

It is an arithmetic number, because the mean of its divisors is an integer number (4987276).

Almost surely, 2^9974551 is an apocalyptic number.

9974551 is a deficient number, since it is larger than the sum of its proper divisors (1).

9974551 is an equidigital number, since it uses as much as digits as its factorization.

9974551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 40.

The square root of 9974551 is about 3158.2512566292. The cubic root of 9974551 is about 215.2605530530.

The spelling of 9974551 in words is "nine million, nine hundred seventy-four thousand, five hundred fifty-one".