2144551 has 2 divisors, whose sum is σ = 2144552. Its totient is φ = 2144550.

The previous prime is 2144537. The next prime is 2144609. The reversal of 2144551 is 1554412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2144551 - 2¹³ = 2136359 is a prime.

It is a Chen prime.

2144551 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072275 + 1072276.

It is an arithmetic number, because the mean of its divisors is an integer number (1072276).

2^2144551 is an apocalyptic number.

2144551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144551 is an equidigital number, since it uses as much as digits as its factorization.

2144551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 800, while the sum is 22.

The square root of 2144551 is about 1464.4285574926. The cubic root of 2144551 is about 128.9571598226.

Adding to 2144551 its reverse (1554412), we get a palindrome (3698963).

The spelling of 2144551 in words is "two million, one hundred forty-four thousand, five hundred fifty-one".