9553921 has 16 divisors (see below), whose sum is σ = 10759168. Its totient is φ = 8424000.

The previous prime is 9553897. The next prime is 9553927. The reversal of 9553921 is 1293559.

It is a happy number.

It is not a de Polignac number, because 9553921 - 2⁷ = 9553793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9553927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60775 + ... + 60931.

It is an arithmetic number, because the mean of its divisors is an integer number (672448).

Almost surely, 2^9553921 is an apocalyptic number.

It is an amenable number.

9553921 is a deficient number, since it is larger than the sum of its proper divisors (1205247).

9553921 is a wasteful number, since it uses less digits than its factorization.

9553921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 12150, while the sum is 34.

The square root of 9553921 is about 3090.9417658701. The cubic root of 9553921 is about 212.1911249609.

The spelling of 9553921 in words is "nine million, five hundred fifty-three thousand, nine hundred twenty-one".