16551156 has 12 divisors (see below), whose sum is σ = 38619392. Its totient is φ = 5517048.

The previous prime is 16551151. The next prime is 16551163. The reversal of 16551156 is 65115561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16551151) 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, 689620 + ... + 689643.

Almost surely, 2^16551156 is an apocalyptic number.

It is an amenable number.

16551156 is an abundant number, since it is smaller than the sum of its proper divisors (22068236).

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

16551156 is a wasteful number, since it uses less digits than its factorization.

16551156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379270 (or 1379268 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 16551156 is about 4068.3111975364. The cubic root of 16551156 is about 254.8449961486.

The spelling of 16551156 in words is "sixteen million, five hundred fifty-one thousand, one hundred fifty-six".