16523223 has 16 divisors (see below), whose sum is σ = 23527680. Its totient is φ = 10289664.

The previous prime is 16523207. The next prime is 16523237. The reversal of 16523223 is 32232561.

It is not a de Polignac number, because 16523223 - 2⁴ = 16523207 is a prime.

It is a super-3 number, since 3×16523223³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16523193 and 16523202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16523203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (1470480).

Almost surely, 2^16523223 is an apocalyptic number.

16523223 is a deficient number, since it is larger than the sum of its proper divisors (7004457).

16523223 is a wasteful number, since it uses less digits than its factorization.

16523223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638.

The product of its digits is 2160, while the sum is 24.

The square root of 16523223 is about 4064.8767508991. The cubic root of 16523223 is about 254.7015501025.

Adding to 16523223 its reverse (32232561), we get a palindrome (48755784).

The spelling of 16523223 in words is "sixteen million, five hundred twenty-three thousand, two hundred twenty-three".