6556149 has 12 divisors (see below), whose sum is σ = 9535500. Its totient is φ = 4340544.

The previous prime is 6556111. The next prime is 6556201. The reversal of 6556149 is 9416556.

It can be written as a sum of positive squares in 2 ways, for example, as 2528100 + 4028049 = 1590^2 + 2007^2 .

It is not a de Polignac number, because 6556149 - 2¹¹ = 6554101 is a prime.

It is a super-3 number, since 3×6556149³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556049) 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 11 ways as a sum of consecutive naturals, for example, 1104 + ... + 3785.

It is an arithmetic number, because the mean of its divisors is an integer number (794625).

Almost surely, 2^6556149 is an apocalyptic number.

It is an amenable number.

6556149 is a deficient number, since it is larger than the sum of its proper divisors (2979351).

6556149 is a wasteful number, since it uses less digits than its factorization.

6556149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044 (or 5041 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6556149 is about 2560.4978031625. The cubic root of 6556149 is about 187.1613942141.

The spelling of 6556149 in words is "six million, five hundred fifty-six thousand, one hundred forty-nine".