16554413 has 4 divisors (see below), whose sum is σ = 17528220. Its totient is φ = 15580608.

The previous prime is 16554407. The next prime is 16554437. The reversal of 16554413 is 31445561.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12482089 + 4072324 = 3533^2 + 2018^2 .

It is a cyclic number.

It is not a de Polignac number, because 16554413 - 2¹⁴ = 16538029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554313) 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, 486878 + ... + 486911.

It is an arithmetic number, because the mean of its divisors is an integer number (4382055).

Almost surely, 2^16554413 is an apocalyptic number.

It is an amenable number.

16554413 is a deficient number, since it is larger than the sum of its proper divisors (973807).

16554413 is an equidigital number, since it uses as much as digits as its factorization.

16554413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973806.

The product of its digits is 7200, while the sum is 29.

The square root of 16554413 is about 4068.7114667914. The cubic root of 16554413 is about 254.8617115110.

Adding to 16554413 its reverse (31445561), we get a palindrome (47999974).

The spelling of 16554413 in words is "sixteen million, five hundred fifty-four thousand, four hundred thirteen".