16772555 has 4 divisors (see below), whose sum is σ = 20127072. Its totient is φ = 13418040.

The previous prime is 16772533. The next prime is 16772597. The reversal of 16772555 is 55527761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55527761 = 109 ⋅509429.

It is not a de Polignac number, because 16772555 - 2⁶ = 16772491 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677251 + ... + 1677260.

It is an arithmetic number, because the mean of its divisors is an integer number (5031768).

Almost surely, 2^16772555 is an apocalyptic number.

16772555 is a deficient number, since it is larger than the sum of its proper divisors (3354517).

16772555 is an equidigital number, since it uses as much as digits as its factorization.

16772555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354516.

The product of its digits is 73500, while the sum is 38.

The square root of 16772555 is about 4095.4309907505. The cubic root of 16772555 is about 255.9762907323.

The spelling of 16772555 in words is "sixteen million, seven hundred seventy-two thousand, five hundred fifty-five".