6557071 has 4 divisors (see below), whose sum is σ = 6902200. Its totient is φ = 6211944.

The previous prime is 6557059. The next prime is 6557077. The reversal of 6557071 is 1707556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6557071 - 2⁹ = 6556559 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 (6557077) 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 3 ways as a sum of consecutive naturals, for example, 172536 + ... + 172573.

It is an arithmetic number, because the mean of its divisors is an integer number (1725550).

Almost surely, 2^6557071 is an apocalyptic number.

6557071 is a deficient number, since it is larger than the sum of its proper divisors (345129).

6557071 is a wasteful number, since it uses less digits than its factorization.

6557071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345128.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 6557071 is about 2560.6778399479. The cubic root of 6557071 is about 187.1701673885.

The spelling of 6557071 in words is "six million, five hundred fifty-seven thousand, seventy-one".