9956551 has 8 divisors (see below), whose sum is σ = 11433600. Its totient is φ = 8574840.

The previous prime is 9956537. The next prime is 9956561. The reversal of 9956551 is 1556599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9956551 - 2⁷ = 9956423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9956561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23611 + ... + 24028.

It is an arithmetic number, because the mean of its divisors is an integer number (1429200).

Almost surely, 2^9956551 is an apocalyptic number.

9956551 is a deficient number, since it is larger than the sum of its proper divisors (1477049).

9956551 is a wasteful number, since it uses less digits than its factorization.

9956551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47669.

The product of its digits is 60750, while the sum is 40.

The square root of 9956551 is about 3155.4002915637. The cubic root of 9956551 is about 215.1309892246.

The spelling of 9956551 in words is "nine million, nine hundred fifty-six thousand, five hundred fifty-one".