2215542443 has 8 divisors (see below), whose sum is σ = 2333866320. Its totient is φ = 2097390240.

The previous prime is 2215542437. The next prime is 2215542451. The reversal of 2215542443 is 3442455122.

2215542443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2215542443 - 2¹⁸ = 2215280299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215542403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15980 + ... + 68457.

It is an arithmetic number, because the mean of its divisors is an integer number (291733290).

Almost surely, 2^2215542443 is an apocalyptic number.

2215542443 is a deficient number, since it is larger than the sum of its proper divisors (118323877).

2215542443 is a wasteful number, since it uses less digits than its factorization.

2215542443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85837.

The product of its digits is 38400, while the sum is 32.

The square root of 2215542443 is about 47069.5489993265. The cubic root of 2215542443 is about 1303.6470455268.

Adding to 2215542443 its reverse (3442455122), we get a palindrome (5657997565).

The spelling of 2215542443 in words is "two billion, two hundred fifteen million, five hundred forty-two thousand, four hundred forty-three".