165557016 has 96 divisors (see below), whose sum is σ = 486486000. Its totient is φ = 50657280.

The previous prime is 165556961. The next prime is 165557017. The reversal of 165557016 is 610755561.

165557016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165557017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48535 + ... + 51833.

Almost surely, 2^165557016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165557016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243243000).

165557016 is an abundant number, since it is smaller than the sum of its proper divisors (320928984).

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

165557016 is a wasteful number, since it uses less digits than its factorization.

165557016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 165557016 is about 12866.8961292147. The cubic root of 165557016 is about 549.0971589915.

The spelling of 165557016 in words is "one hundred sixty-five million, five hundred fifty-seven thousand, sixteen".