16527997 has 8 divisors (see below), whose sum is σ = 17000280. Its totient is φ = 16061760.

The previous prime is 16527983. The next prime is 16528009. The reversal of 16527997 is 79972561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5861241 + 10666756 = 2421^2 + 3266^2 .

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 16527997 - 2¹⁹ = 16003709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16527947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4347 + ... + 7207.

It is an arithmetic number, because the mean of its divisors is an integer number (2125035).

Almost surely, 2^16527997 is an apocalyptic number.

It is an amenable number.

16527997 is a deficient number, since it is larger than the sum of its proper divisors (472283).

16527997 is a wasteful number, since it uses less digits than its factorization.

16527997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023.

The product of its digits is 238140, while the sum is 46.

The square root of 16527997 is about 4065.4639341654. The cubic root of 16527997 is about 254.7260777650.

The spelling of 16527997 in words is "sixteen million, five hundred twenty-seven thousand, nine hundred ninety-seven".