2921125 has 8 divisors (see below), whose sum is σ = 3645720. Its totient is φ = 2336800.

The previous prime is 2921111. The next prime is 2921129. The reversal of 2921125 is 5211292.

It can be written as a sum of positive squares in 4 ways, for example, as 515524 + 2405601 = 718^2 + 1551^2 .

It is not a de Polignac number, because 2921125 - 2¹⁵ = 2888357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2921096 and 2921105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921129) 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, 11560 + ... + 11809.

It is an arithmetic number, because the mean of its divisors is an integer number (455715).

2^2921125 is an apocalyptic number.

2921125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2921125 is a deficient number, since it is larger than the sum of its proper divisors (724595).

2921125 is an equidigital number, since it uses as much as digits as its factorization.

2921125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23384 (or 23374 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 2921125 is about 1709.1298955902. The cubic root of 2921125 is about 142.9497435343.

The spelling of 2921125 in words is "two million, nine hundred twenty-one thousand, one hundred twenty-five".