16554489 has 8 divisors (see below), whose sum is σ = 25225920. Its totient is φ = 9459696.

The previous prime is 16554449. The next prime is 16554511. The reversal of 16554489 is 98445561.

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

It is not a de Polignac number, because 16554489 - 2¹² = 16550393 is a prime.

It is a super-2 number, since 2×16554489² = 548102212102242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16554489.

It is not an unprimeable number, because it can be changed into a prime (16554449) 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, 394134 + ... + 394175.

It is an arithmetic number, because the mean of its divisors is an integer number (3153240).

Almost surely, 2^16554489 is an apocalyptic number.

It is an amenable number.

16554489 is a deficient number, since it is larger than the sum of its proper divisors (8671431).

16554489 is an equidigital number, since it uses as much as digits as its factorization.

16554489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788319.

The product of its digits is 172800, while the sum is 42.

The square root of 16554489 is about 4068.7208063469. The cubic root of 16554489 is about 254.8621015271.

The spelling of 16554489 in words is "sixteen million, five hundred fifty-four thousand, four hundred eighty-nine".