9551651 has 4 divisors (see below), whose sum is σ = 9558432. Its totient is φ = 9544872.

The previous prime is 9551639. The next prime is 9551677. The reversal of 9551651 is 1561559.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9551651 - 2¹⁰ = 9550627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9551621) 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 in 3 ways as a sum of consecutive naturals, for example, 395 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (2389608).

Almost surely, 2^9551651 is an apocalyptic number.

9551651 is a deficient number, since it is larger than the sum of its proper divisors (6781).

9551651 is a wasteful number, since it uses less digits than its factorization.

9551651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780.

The product of its digits is 6750, while the sum is 32.

The square root of 9551651 is about 3090.5745420552. The cubic root of 9551651 is about 212.1743181788.

The spelling of 9551651 in words is "nine million, five hundred fifty-one thousand, six hundred fifty-one".