6557481 has 12 divisors (see below), whose sum is σ = 10825152. Its totient is φ = 3747096.

The previous prime is 6557479. The next prime is 6557513. The reversal of 6557481 is 1847556.

6557481 is a `hidden beast` number, since 6 + 5 + 574 + 81 = 666.

It is not a de Polignac number, because 6557481 - 2¹ = 6557479 is a prime.

It is a super-2 number, since 2×6557481² = 86001114130722, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6557401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51981 + ... + 52106.

It is an arithmetic number, because the mean of its divisors is an integer number (902096).

Almost surely, 2^6557481 is an apocalyptic number.

It is an amenable number.

6557481 is a deficient number, since it is larger than the sum of its proper divisors (4267671).

6557481 is a wasteful number, since it uses less digits than its factorization.

6557481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104100 (or 104097 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 6557481 is about 2560.7578956239. The cubic root of 6557481 is about 187.1740684275.

The spelling of 6557481 in words is "six million, five hundred fifty-seven thousand, four hundred eighty-one".