16780255 has 4 divisors (see below), whose sum is σ = 20136312. Its totient is φ = 13424200.

The previous prime is 16780237. The next prime is 16780259. The reversal of 16780255 is 55208761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55208761 = 239 ⋅230999.

It is not a de Polignac number, because 16780255 - 2⁹ = 16779743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16780255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780259) 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, 1678021 + ... + 1678030.

It is an arithmetic number, because the mean of its divisors is an integer number (5034078).

Almost surely, 2^16780255 is an apocalyptic number.

16780255 is a deficient number, since it is larger than the sum of its proper divisors (3356057).

16780255 is an equidigital number, since it uses as much as digits as its factorization.

16780255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356056.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 16780255 is about 4096.3709548819. The cubic root of 16780255 is about 256.0154562201.

The spelling of 16780255 in words is "sixteen million, seven hundred eighty thousand, two hundred fifty-five".