6557885471 has 4 divisors (see below), whose sum is σ = 6558663072. Its totient is φ = 6557107872.

The previous prime is 6557885461. The next prime is 6557885491. The reversal of 6557885471 is 1745887556.

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 6557885471 - 2²² = 6553691167 is a prime.

It is a super-3 number, since 3×6557885471³ (a number of 30 digits) contains 333 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 (6557885441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376010 + ... + 393063.

It is an arithmetic number, because the mean of its divisors is an integer number (1639665768).

Almost surely, 2^6557885471 is an apocalyptic number.

6557885471 is a deficient number, since it is larger than the sum of its proper divisors (777601).

6557885471 is an equidigital number, since it uses as much as digits as its factorization.

6557885471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777600.

The product of its digits is 9408000, while the sum is 56.

The square root of 6557885471 is about 80980.7722302029. The cubic root of 6557885471 is about 1871.7791670028.

The spelling of 6557885471 in words is "six billion, five hundred fifty-seven million, eight hundred eighty-five thousand, four hundred seventy-one".