16856051 has 2 divisors, whose sum is σ = 16856052. Its totient is φ = 16856050.

The previous prime is 16856029. The next prime is 16856071. The reversal of 16856051 is 15065861.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15065861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16856051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16855999 and 16856017.

It is not a weakly prime, because it can be changed into another prime (16856011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8428025 + 8428026.

It is an arithmetic number, because the mean of its divisors is an integer number (8428026).

Almost surely, 2^16856051 is an apocalyptic number.

16856051 is a deficient number, since it is larger than the sum of its proper divisors (1).

16856051 is an equidigital number, since it uses as much as digits as its factorization.

16856051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 16856051 is about 4105.6121346274. The cubic root of 16856051 is about 256.4003491274.

The spelling of 16856051 in words is "sixteen million, eight hundred fifty-six thousand, fifty-one".