16553923 has 8 divisors (see below), whose sum is σ = 16846592. Its totient is φ = 16263936.

The previous prime is 16553893. The next prime is 16553941. The reversal of 16553923 is 32935561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16553923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16553993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14686 + ... + 15772.

It is an arithmetic number, because the mean of its divisors is an integer number (2105824).

Almost surely, 2^16553923 is an apocalyptic number.

16553923 is a deficient number, since it is larger than the sum of its proper divisors (292669).

16553923 is a wasteful number, since it uses less digits than its factorization.

16553923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its digits is 24300, while the sum is 34.

The square root of 16553923 is about 4068.6512507218. The cubic root of 16553923 is about 254.8591969052.

The spelling of 16553923 in words is "sixteen million, five hundred fifty-three thousand, nine hundred twenty-three".