2240155 has 4 divisors (see below), whose sum is σ = 2688192. Its totient is φ = 1792120.

The previous prime is 2240137. The next prime is 2240159. The reversal of 2240155 is 5510422.

2240155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5510422 = 2 ⋅2755211.

It is not a de Polignac number, because 2240155 - 2⁷ = 2240027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240159) 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, 224011 + ... + 224020.

It is an arithmetic number, because the mean of its divisors is an integer number (672048).

2^2240155 is an apocalyptic number.

2240155 is a deficient number, since it is larger than the sum of its proper divisors (448037).

2240155 is an equidigital number, since it uses as much as digits as its factorization.

2240155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448036.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2240155 is about 1496.7147356794. The cubic root of 2240155 is about 130.8456702860.

Adding to 2240155 its reverse (5510422), we get a palindrome (7750577).

The spelling of 2240155 in words is "two million, two hundred forty thousand, one hundred fifty-five".