2421155 has 8 divisors (see below), whose sum is σ = 3169584. Its totient is φ = 1760800.

The previous prime is 2421149. The next prime is 2421163. The reversal of 2421155 is 5511242.

2421155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2421155 - 2¹⁴ = 2404771 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21956 + ... + 22065.

It is an arithmetic number, because the mean of its divisors is an integer number (396198).

2^2421155 is an apocalyptic number.

2421155 is a deficient number, since it is larger than the sum of its proper divisors (748429).

2421155 is a wasteful number, since it uses less digits than its factorization.

2421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44037.

The product of its digits is 400, while the sum is 20.

The square root of 2421155 is about 1556.0061053865. The cubic root of 2421155 is about 134.2788246374.

Adding to 2421155 its reverse (5511242), we get a palindrome (7932397).

The spelling of 2421155 in words is "two million, four hundred twenty-one thousand, one hundred fifty-five".