2215544 has 16 divisors (see below), whose sum is σ = 4335120. Its totient is φ = 1059520.

The previous prime is 2215541. The next prime is 2215547. The reversal of 2215544 is 4455122.

It is a happy number.

2215544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2215541) and next prime (2215547).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215541) 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 3 ways as a sum of consecutive naturals, for example, 5837 + ... + 6204.

It is an arithmetic number, because the mean of its divisors is an integer number (270945).

2^2215544 is an apocalyptic number.

It is an amenable number.

2215544 is a deficient number, since it is larger than the sum of its proper divisors (2119576).

2215544 is a wasteful number, since it uses less digits than its factorization.

2215544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070 (or 12066 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 2215544 is about 1488.4703557680. The cubic root of 2215544 is about 130.3647350911.

The spelling of 2215544 in words is "two million, two hundred fifteen thousand, five hundred forty-four".