16534243 has 4 divisors (see below), whose sum is σ = 18037368. Its totient is φ = 15031120.

The previous prime is 16534241. The next prime is 16534249. The reversal of 16534243 is 34243561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16534243 - 2¹ = 16534241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16534241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751546 + ... + 751567.

It is an arithmetic number, because the mean of its divisors is an integer number (4509342).

Almost surely, 2^16534243 is an apocalyptic number.

16534243 is a deficient number, since it is larger than the sum of its proper divisors (1503125).

16534243 is a wasteful number, since it uses less digits than its factorization.

16534243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503124.

The product of its digits is 8640, while the sum is 28.

The square root of 16534243 is about 4066.2320396160. The cubic root of 16534243 is about 254.7581610781.

The spelling of 16534243 in words is "sixteen million, five hundred thirty-four thousand, two hundred forty-three".