2159554452 has 96 divisors (see below), whose sum is σ = 5671970304. Its totient is φ = 633916800.

The previous prime is 2159554451. The next prime is 2159554477. The reversal of 2159554452 is 2544559512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159554451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537483 + ... + 541485.

It is an arithmetic number, because the mean of its divisors is an integer number (59083024).

Almost surely, 2^2159554452 is an apocalyptic number.

2159554452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2159554452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2835985152).

2159554452 is an abundant number, since it is smaller than the sum of its proper divisors (3512415852).

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

2159554452 is a wasteful number, since it uses less digits than its factorization.

2159554452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149 (or 4147 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

The square root of 2159554452 is about 46471.0065739919. The cubic root of 2159554452 is about 1292.5719279010.

The spelling of 2159554452 in words is "two billion, one hundred fifty-nine million, five hundred fifty-four thousand, four hundred fifty-two".