16852621 has 2 divisors, whose sum is σ = 16852622. Its totient is φ = 16852620.

The previous prime is 16852613. The next prime is 16852637. The reversal of 16852621 is 12625861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9696996 + 7155625 = 3114^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 16852621 - 2³ = 16852613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16852651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426310 + 8426311.

It is an arithmetic number, because the mean of its divisors is an integer number (8426311).

Almost surely, 2^16852621 is an apocalyptic number.

It is an amenable number.

16852621 is a deficient number, since it is larger than the sum of its proper divisors (1).

16852621 is an equidigital number, since it uses as much as digits as its factorization.

16852621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 16852621 is about 4105.1943924740. The cubic root of 16852621 is about 256.3829565037.

The spelling of 16852621 in words is "sixteen million, eight hundred fifty-two thousand, six hundred twenty-one".