2921875 has 28 divisors (see below), whose sum is σ = 4218696. Its totient is φ = 2000000.

The previous prime is 2921873. The next prime is 2921879. The reversal of 2921875 is 5781292.

2921875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2921875 - 2¹ = 2921873 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2921875.

It is not an unprimeable number, because it can be changed into a prime (2921873) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 171867 + ... + 171883.

2^2921875 is an apocalyptic number.

2921875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2921875 is a deficient number, since it is larger than the sum of its proper divisors (1296821).

2921875 is an frugal number, since it uses more digits than its factorization.

2921875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 33 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 2921875 is about 1709.3492913972. The cubic root of 2921875 is about 142.9619766218.

It can be divided in two parts, 29 and 21875, that added together give a square (21904 = 148²).

The spelling of 2921875 in words is "two million, nine hundred twenty-one thousand, eight hundred seventy-five".