16223545 has 8 divisors (see below), whose sum is σ = 20965896. Its totient is φ = 11980416.

The previous prime is 16223539. The next prime is 16223551. The reversal of 16223545 is 54532261.

It is an interprime number because it is at equal distance from previous prime (16223539) and next prime (16223551).

It can be written as a sum of positive squares in 4 ways, for example, as 1447209 + 14776336 = 1203^2 + 3844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16223545 - 2⁹ = 16223033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124732 + ... + 124861.

It is an arithmetic number, because the mean of its divisors is an integer number (2620737).

Almost surely, 2^16223545 is an apocalyptic number.

It is an amenable number.

16223545 is a deficient number, since it is larger than the sum of its proper divisors (4742351).

16223545 is a wasteful number, since it uses less digits than its factorization.

16223545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249611.

The product of its digits is 7200, while the sum is 28.

The square root of 16223545 is about 4027.8461986526. The cubic root of 16223545 is about 253.1523243378.

The spelling of 16223545 in words is "sixteen million, two hundred twenty-three thousand, five hundred forty-five".