2144555 has 16 divisors (see below), whose sum is σ = 2985984. Its totient is φ = 1448160.

The previous prime is 2144551. The next prime is 2144609. The reversal of 2144555 is 5554412.

It is not a de Polignac number, because 2144555 - 2² = 2144551 is a prime.

It is a super-2 number, since 2×2144555² = 9198232296050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2054 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (186624).

2^2144555 is an apocalyptic number.

2144555 is a deficient number, since it is larger than the sum of its proper divisors (841429).

2144555 is an equidigital number, since it uses as much as digits as its factorization.

2144555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946.

The product of its digits is 4000, while the sum is 26.

The square root of 2144555 is about 1464.4299232124. The cubic root of 2144555 is about 128.9572399992.

Adding to 2144555 its reverse (5554412), we get a palindrome (7698967).

The spelling of 2144555 in words is "two million, one hundred forty-four thousand, five hundred fifty-five".