2155232 has 24 divisors (see below), whose sum is σ = 4336416. Its totient is φ = 1053952.

The previous prime is 2155207. The next prime is 2155253. The reversal of 2155232 is 2325512.

2155232 is nontrivially palindromic in base 15.

It is a super-3 number, since 3×2155232³ = 30033319393153941504, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 5⁵ + 5⁶ + 2²⁰ + 3⁸ + 2²⁰ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (180684).

2^2155232 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 2155232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168208).

2155232 is an abundant number, since it is smaller than the sum of its proper divisors (2181184).

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

2155232 is a wasteful number, since it uses less digits than its factorization.

2155232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1482 counting only the distinct ones).

The product of its digits is 600, while the sum is 20.

The square root of 2155232 is about 1468.0708429773. The cubic root of 2155232 is about 129.1708970288.

The spelling of 2155232 in words is "two million, one hundred fifty-five thousand, two hundred thirty-two".