2821125 has 16 divisors (see below), whose sum is σ = 4694976. Its totient is φ = 1504400.

The previous prime is 2821109. The next prime is 2821141. The reversal of 2821125 is 5211282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2821109) and next prime (2821141).

It is not a de Polignac number, because 2821125 - 2⁴ = 2821109 is a prime.

It is a Curzon number.

It is a congruent number.

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, 3387 + ... + 4136.

It is an arithmetic number, because the mean of its divisors is an integer number (293436).

2^2821125 is an apocalyptic number.

2821125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2821125 is a deficient number, since it is larger than the sum of its proper divisors (1873851).

2821125 is an equidigital number, since it uses as much as digits as its factorization.

2821125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541 (or 7531 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 2821125 is about 1679.6204928495. The cubic root of 2821125 is about 141.2995492753.

The spelling of 2821125 in words is "two million, eight hundred twenty-one thousand, one hundred twenty-five".