2155452 has 48 divisors (see below), whose sum is σ = 5564832. Its totient is φ = 645120.

The previous prime is 2155451. The next prime is 2155463. The reversal of 2155452 is 2545512.

It is a happy number.

2155452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6228 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (115934).

2^2155452 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 2155452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2782416).

2155452 is an abundant number, since it is smaller than the sum of its proper divisors (3409380).

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

2155452 is a wasteful number, since it uses less digits than its factorization.

2155452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 396 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 2155452 is about 1468.1457693295. The cubic root of 2155452 is about 129.1752920128.

The spelling of 2155452 in words is "two million, one hundred fifty-five thousand, four hundred fifty-two".