2187125 has 8 divisors (see below), whose sum is σ = 2729688. Its totient is φ = 1749600.

The previous prime is 2187121. The next prime is 2187149. The reversal of 2187125 is 5217812.

It can be written as a sum of positive squares in 4 ways, for example, as 654481 + 1532644 = 809^2 + 1238^2 .

It is not a de Polignac number, because 2187125 - 2² = 2187121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2187094 and 2187103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8624 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (341211).

2^2187125 is an apocalyptic number.

2187125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2187125 is a deficient number, since it is larger than the sum of its proper divisors (542563).

2187125 is an equidigital number, since it uses as much as digits as its factorization.

2187125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17512 (or 17502 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 2187125 is about 1478.8931672031. The cubic root of 2187125 is about 129.8049342736.

The spelling of 2187125 in words is "two million, one hundred eighty-seven thousand, one hundred twenty-five".