16653043 has 4 divisors (see below), whose sum is σ = 18166968. Its totient is φ = 15139120.

The previous prime is 16653031. The next prime is 16653059. The reversal of 16653043 is 34035661.

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 16653043 - 2¹³ = 16644851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16653023) 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, 756946 + ... + 756967.

It is an arithmetic number, because the mean of its divisors is an integer number (4541742).

Almost surely, 2^16653043 is an apocalyptic number.

16653043 is a deficient number, since it is larger than the sum of its proper divisors (1513925).

16653043 is a wasteful number, since it uses less digits than its factorization.

16653043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513924.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 16653043 is about 4080.8140119344. The cubic root of 16653043 is about 255.3668588634.

The spelling of 16653043 in words is "sixteen million, six hundred fifty-three thousand, forty-three".