6557131 has 10 divisors (see below), whose sum is σ = 7652332. Its totient is φ = 5618340.

The previous prime is 6557123. The next prime is 6557153. The reversal of 6557131 is 1317556.

It is not a de Polignac number, because 6557131 - 2³ = 6557123 is a prime.

It is a super-2 number, since 2×6557131² = 85991933902322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6557131.

It is not an unprimeable number, because it can be changed into a prime (6557101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1036 + ... + 3766.

Almost surely, 2^6557131 is an apocalyptic number.

6557131 is a deficient number, since it is larger than the sum of its proper divisors (1095201).

6557131 is an frugal number, since it uses more digits than its factorization.

6557131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2738 counting only the distinct ones).

The product of its digits is 3150, while the sum is 28.

The square root of 6557131 is about 2560.6895555690. The cubic root of 6557131 is about 187.1707382824.

The spelling of 6557131 in words is "six million, five hundred fifty-seven thousand, one hundred thirty-one".