16145506 has 8 divisors (see below), whose sum is σ = 26081244. Its totient is φ = 7451760.

The previous prime is 16145477. The next prime is 16145531. The reversal of 16145506 is 60554161.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 25281 = 4015^2 + 159^2 .

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

It is a super-3 number, since 3×16145506³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310465 + ... + 310516.

Almost surely, 2^16145506 is an apocalyptic number.

16145506 is a deficient number, since it is larger than the sum of its proper divisors (9935738).

16145506 is a wasteful number, since it uses less digits than its factorization.

16145506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620996.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 16145506 is about 4018.1470854114. The cubic root of 16145506 is about 252.7457646999.

Adding to 16145506 its reverse (60554161), we get a palindrome (76699667).

The spelling of 16145506 in words is "sixteen million, one hundred forty-five thousand, five hundred six".