9551997 has 48 divisors (see below), whose sum is σ = 17297280. Its totient is φ = 4945536.

The previous prime is 9551987. The next prime is 9552001. The reversal of 9551997 is 7991559.

9551997 is a `hidden beast` number, since 9 + 551 + 9 + 97 = 666.

It is not a de Polignac number, because 9551997 - 2⁴ = 9551981 is a prime.

9551997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9551917) 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 in 47 ways as a sum of consecutive naturals, for example, 87579 + ... + 87687.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^9551997 is an apocalyptic number.

It is an amenable number.

9551997 is a deficient number, since it is larger than the sum of its proper divisors (7745283).

9551997 is a wasteful number, since it uses less digits than its factorization.

9551997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 239 counting only the distinct ones).

The product of its digits is 127575, while the sum is 45.

The square root of 9551997 is about 3090.6305181953. The cubic root of 9551997 is about 212.1768800894.

The spelling of 9551997 in words is "nine million, five hundred fifty-one thousand, nine hundred ninety-seven".