6556081 has 16 divisors (see below), whose sum is σ = 8008704. Its totient is φ = 5244624.

The previous prime is 6556079. The next prime is 6556111. The reversal of 6556081 is 1806556.

It is not a de Polignac number, because 6556081 - 2¹ = 6556079 is a prime.

It is a super-2 number, since 2×6556081² = 85964396157122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6450 + ... + 7396.

It is an arithmetic number, because the mean of its divisors is an integer number (500544).

Almost surely, 2^6556081 is an apocalyptic number.

It is an amenable number.

6556081 is a deficient number, since it is larger than the sum of its proper divisors (1452623).

6556081 is a wasteful number, since it uses less digits than its factorization.

6556081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 6556081 is about 2560.4845244602. The cubic root of 6556081 is about 187.1607471361.

The spelling of 6556081 in words is "six million, five hundred fifty-six thousand, eighty-one".