16670553 has 4 divisors (see below), whose sum is σ = 22227408. Its totient is φ = 11113700.

The previous prime is 16670531. The next prime is 16670579. The reversal of 16670553 is 35507661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16670553 - 2¹⁰ = 16669529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16670503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778423 + ... + 2778428.

It is an arithmetic number, because the mean of its divisors is an integer number (5556852).

Almost surely, 2^16670553 is an apocalyptic number.

It is an amenable number.

16670553 is a deficient number, since it is larger than the sum of its proper divisors (5556855).

16670553 is an equidigital number, since it uses as much as digits as its factorization.

16670553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556854.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 16670553 is about 4082.9588535767. The cubic root of 16670553 is about 255.4563301475.

The spelling of 16670553 in words is "sixteen million, six hundred seventy thousand, five hundred fifty-three".