9557421 has 8 divisors (see below), whose sum is σ = 12781344. Its totient is φ = 6352560.

The previous prime is 9557413. The next prime is 9557441. The reversal of 9557421 is 1247559.

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

It is not a de Polignac number, because 9557421 - 2³ = 9557413 is a prime.

9557421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9557411) 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 7 ways as a sum of consecutive naturals, for example, 3550 + ... + 5631.

It is an arithmetic number, because the mean of its divisors is an integer number (1597668).

Almost surely, 2^9557421 is an apocalyptic number.

It is an amenable number.

9557421 is a deficient number, since it is larger than the sum of its proper divisors (3223923).

9557421 is a wasteful number, since it uses less digits than its factorization.

9557421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9531.

The product of its digits is 12600, while the sum is 33.

The square root of 9557421 is about 3091.5078845120. The cubic root of 9557421 is about 212.2170332858.

The spelling of 9557421 in words is "nine million, five hundred fifty-seven thousand, four hundred twenty-one".