16550506 has 16 divisors (see below), whose sum is σ = 28563840. Its totient is φ = 7045200.

The previous prime is 16550491. The next prime is 16550509. The reversal of 16550506 is 60505561.

It is not an unprimeable number, because it can be changed into a prime (16550509) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1801 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (1785240).

Almost surely, 2^16550506 is an apocalyptic number.

16550506 is a deficient number, since it is larger than the sum of its proper divisors (12013334).

16550506 is a wasteful number, since it uses less digits than its factorization.

16550506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 16550506 is about 4068.2313110245. The cubic root of 16550506 is about 254.8416599986.

The spelling of 16550506 in words is "sixteen million, five hundred fifty thousand, five hundred six".