2124555 has 8 divisors (see below), whose sum is σ = 3399312. Its totient is φ = 1133088.

The previous prime is 2124553. The next prime is 2124571. The reversal of 2124555 is 5554212.

It is a happy number.

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

It is not a de Polignac number, because 2124555 - 2¹ = 2124553 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2124553) 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, 70804 + ... + 70833.

It is an arithmetic number, because the mean of its divisors is an integer number (424914).

2^2124555 is an apocalyptic number.

2124555 is a deficient number, since it is larger than the sum of its proper divisors (1274757).

2124555 is a wasteful number, since it uses less digits than its factorization.

2124555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141645.

The product of its digits is 2000, while the sum is 24.

The square root of 2124555 is about 1457.5853319789. The cubic root of 2124555 is about 128.5551046295. Note that the first 3 decimals are identical.

Adding to 2124555 its reverse (5554212), we get a palindrome (7678767).

The spelling of 2124555 in words is "two million, one hundred twenty-four thousand, five hundred fifty-five".