16066553 has 2 divisors, whose sum is σ = 16066554. Its totient is φ = 16066552.

The previous prime is 16066549. The next prime is 16066577. The reversal of 16066553 is 35566061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15904144 + 162409 = 3988^2 + 403^2 .

It is an emirp because it is prime and its reverse (35566061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16066553 - 2² = 16066549 is a prime.

It is not a weakly prime, because it can be changed into another prime (16066543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8033276 + 8033277.

It is an arithmetic number, because the mean of its divisors is an integer number (8033277).

Almost surely, 2^16066553 is an apocalyptic number.

It is an amenable number.

16066553 is a deficient number, since it is larger than the sum of its proper divisors (1).

16066553 is an equidigital number, since it uses as much as digits as its factorization.

16066553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 16066553 is about 4008.3104919654. The cubic root of 16066553 is about 252.3331080276. Note that the first 3 decimals are identical.

The spelling of 16066553 in words is "sixteen million, sixty-six thousand, five hundred fifty-three".