16216550 has 36 divisors (see below), whose sum is σ = 35092620. Its totient is φ = 5559120.

The previous prime is 16216549. The next prime is 16216573. The reversal of 16216550 is 5561261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 860 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (974795).

Almost surely, 2^16216550 is an apocalyptic number.

16216550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16216550 is an abundant number, since it is smaller than the sum of its proper divisors (18876070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16216550 is a wasteful number, since it uses less digits than its factorization.

16216550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645 (or 6633 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 16216550 is about 4026.9777749573. The cubic root of 16216550 is about 253.1159357624.

The spelling of 16216550 in words is "sixteen million, two hundred sixteen thousand, five hundred fifty".