16551004 has 6 divisors (see below), whose sum is σ = 28964264. Its totient is φ = 8275500.

The previous prime is 16550987. The next prime is 16551011. The reversal of 16551004 is 40015561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2068872 + ... + 2068879.

Almost surely, 2^16551004 is an apocalyptic number.

It is an amenable number.

16551004 is a deficient number, since it is larger than the sum of its proper divisors (12413260).

16551004 is a wasteful number, since it uses less digits than its factorization.

16551004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137755 (or 4137753 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 16551004 is about 4068.2925165234. The cubic root of 16551004 is about 254.8442160106.

Adding to 16551004 its reverse (40015561), we get a palindrome (56566565).

The spelling of 16551004 in words is "sixteen million, five hundred fifty-one thousand, four".