16555671 has 40 divisors (see below), whose sum is σ = 28592784. Its totient is φ = 9434880.

The previous prime is 16555667. The next prime is 16555673. The reversal of 16555671 is 17655561.

It is not a de Polignac number, because 16555671 - 2² = 16555667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16555673) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14601 + ... + 15693.

Almost surely, 2^16555671 is an apocalyptic number.

16555671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16555671 is a deficient number, since it is larger than the sum of its proper divisors (12037113).

16555671 is a wasteful number, since it uses less digits than its factorization.

16555671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1124 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 16555671 is about 4068.8660582526. The cubic root of 16555671 is about 254.8681671494.

The spelling of 16555671 in words is "sixteen million, five hundred fifty-five thousand, six hundred seventy-one".