16551343 has 2 divisors, whose sum is σ = 16551344. Its totient is φ = 16551342.

The previous prime is 16551341. The next prime is 16551361. The reversal of 16551343 is 34315561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16551343 - 2¹ = 16551341 is a prime.

Together with 16551341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16551341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275671 + 8275672.

It is an arithmetic number, because the mean of its divisors is an integer number (8275672).

Almost surely, 2^16551343 is an apocalyptic number.

16551343 is a deficient number, since it is larger than the sum of its proper divisors (1).

16551343 is an equidigital number, since it uses as much as digits as its factorization.

16551343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 16551343 is about 4068.3341799808. The cubic root of 16551343 is about 254.8459559171.

The spelling of 16551343 in words is "sixteen million, five hundred fifty-one thousand, three hundred forty-three".