16550404 has 24 divisors (see below), whose sum is σ = 32200448. Its totient is φ = 7391520.

The previous prime is 16550393. The next prime is 16550411. The reversal of 16550404 is 40405561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522 + ... + 6745.

Almost surely, 2^16550404 is an apocalyptic number.

It is an amenable number.

16550404 is a deficient number, since it is larger than the sum of its proper divisors (15650044).

16550404 is a wasteful number, since it uses less digits than its factorization.

16550404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315 (or 10313 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 16550404 is about 4068.2187748448. The cubic root of 16550404 is about 254.8411364718.

Adding to 16550404 its reverse (40405561), we get a palindrome (56955965).

The spelling of 16550404 in words is "sixteen million, five hundred fifty thousand, four hundred four".