16545977 has 8 divisors (see below), whose sum is σ = 19296000. Its totient is φ = 14181972.

The previous prime is 16545959. The next prime is 16545989. The reversal of 16545977 is 77954561.

It is a de Polignac number, because none of the positive numbers 2^k-16545977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16545577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23777 + ... + 24462.

It is an arithmetic number, because the mean of its divisors is an integer number (2412000).

Almost surely, 2^16545977 is an apocalyptic number.

It is an amenable number.

16545977 is a deficient number, since it is larger than the sum of its proper divisors (2750023).

16545977 is an frugal number, since it uses more digits than its factorization.

16545977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48260 (or 48246 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 16545977 is about 4067.6746428396. The cubic root of 16545977 is about 254.8184123071.

The spelling of 16545977 in words is "sixteen million, five hundred forty-five thousand, nine hundred seventy-seven".