6553391 has 8 divisors (see below), whose sum is σ = 7301280. Its totient is φ = 5840352.

The previous prime is 6553387. The next prime is 6553441. The reversal of 6553391 is 1933556.

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 6553391 - 2² = 6553387 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 (6553331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8315 + ... + 9068.

It is an arithmetic number, because the mean of its divisors is an integer number (912660).

Almost surely, 2^6553391 is an apocalyptic number.

6553391 is a deficient number, since it is larger than the sum of its proper divisors (747889).

6553391 is a wasteful number, since it uses less digits than its factorization.

6553391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17425.

The product of its digits is 12150, while the sum is 32.

The square root of 6553391 is about 2559.9591793620. The cubic root of 6553391 is about 187.1351459025.

The spelling of 6553391 in words is "six million, five hundred fifty-three thousand, three hundred ninety-one".