16222445 has 4 divisors (see below), whose sum is σ = 19466940. Its totient is φ = 12977952.

The previous prime is 16222441. The next prime is 16222469. The reversal of 16222445 is 54422261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54422261 = 919 ⋅59219.

It can be written as a sum of positive squares in 2 ways, for example, as 12482089 + 3740356 = 3533^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 16222445 - 2² = 16222441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16222441) 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, 1622240 + ... + 1622249.

It is an arithmetic number, because the mean of its divisors is an integer number (4866735).

Almost surely, 2^16222445 is an apocalyptic number.

It is an amenable number.

16222445 is a deficient number, since it is larger than the sum of its proper divisors (3244495).

16222445 is an equidigital number, since it uses as much as digits as its factorization.

16222445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244494.

The product of its digits is 3840, while the sum is 26.

The square root of 16222445 is about 4027.7096469334. The cubic root of 16222445 is about 253.1466027389.

The spelling of 16222445 in words is "sixteen million, two hundred twenty-two thousand, four hundred forty-five".