2421875 has 16 divisors (see below), whose sum is σ = 3124992. Its totient is φ = 1875000.

The previous prime is 2421847. The next prime is 2421893. The reversal of 2421875 is 5781242.

It is not a de Polignac number, because 2421875 - 2¹⁶ = 2356339 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78110 + ... + 78140.

It is an arithmetic number, because the mean of its divisors is an integer number (195312).

2^2421875 is an apocalyptic number.

2421875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2421875 is a deficient number, since it is larger than the sum of its proper divisors (703117).

2421875 is an frugal number, since it uses more digits than its factorization.

2421875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 36 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 2421875 is about 1556.2374497486. The cubic root of 2421875 is about 134.2921338736.

The spelling of 2421875 in words is "two million, four hundred twenty-one thousand, eight hundred seventy-five".