16922155 has 4 divisors (see below), whose sum is σ = 20306592. Its totient is φ = 13537720.

The previous prime is 16922137. The next prime is 16922159. The reversal of 16922155 is 55122961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55122961 = 79 ⋅697759.

It is not a de Polignac number, because 16922155 - 2¹¹ = 16920107 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16922159) 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, 1692211 + ... + 1692220.

It is an arithmetic number, because the mean of its divisors is an integer number (5076648).

Almost surely, 2^16922155 is an apocalyptic number.

16922155 is a deficient number, since it is larger than the sum of its proper divisors (3384437).

16922155 is an equidigital number, since it uses as much as digits as its factorization.

16922155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384436.

The product of its digits is 5400, while the sum is 31.

The square root of 16922155 is about 4113.6547011143. The cubic root of 16922155 is about 256.7350851130.

The spelling of 16922155 in words is "sixteen million, nine hundred twenty-two thousand, one hundred fifty-five".