16652081 has 2 divisors, whose sum is σ = 16652082. Its totient is φ = 16652080.

The previous prime is 16652059. The next prime is 16652099. The reversal of 16652081 is 18025661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 7890481 = 2960^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 16652081 - 2¹⁸ = 16389937 is a prime.

It is a super-2 number, since 2×16652081² = 554583603261122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16652011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8326040 + 8326041.

It is an arithmetic number, because the mean of its divisors is an integer number (8326041).

Almost surely, 2^16652081 is an apocalyptic number.

It is an amenable number.

16652081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16652081 is an equidigital number, since it uses as much as digits as its factorization.

16652081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 16652081 is about 4080.6961415915. The cubic root of 16652081 is about 255.3619414909.

The spelling of 16652081 in words is "sixteen million, six hundred fifty-two thousand, eighty-one".