165451356 has 96 divisors (see below), whose sum is σ = 495936000. Its totient is φ = 46721664.

The previous prime is 165451333. The next prime is 165451369. The reversal of 165451356 is 653154561.

165451356 is digitally balanced in base 3, 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 self number, because there is not a number n which added to its sum of digits gives 165451356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66055 + ... + 68513.

It is an arithmetic number, because the mean of its divisors is an integer number (5166000).

Almost surely, 2^165451356 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 165451356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247968000).

165451356 is an abundant number, since it is smaller than the sum of its proper divisors (330484644).

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

165451356 is a wasteful number, since it uses less digits than its factorization.

165451356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568 (or 2560 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 165451356 is about 12862.7895885768. The cubic root of 165451356 is about 548.9803211914.

The spelling of 165451356 in words is "one hundred sixty-five million, four hundred fifty-one thousand, three hundred fifty-six".