2151125 has 8 divisors (see below), whose sum is σ = 2684760. Its totient is φ = 1720800.

The previous prime is 2151119. The next prime is 2151137. The reversal of 2151125 is 5211512.

It can be written as a sum of positive squares in 4 ways, for example, as 117649 + 2033476 = 343^2 + 1426^2 .

It is not a de Polignac number, because 2151125 - 2¹⁰ = 2150101 is a prime.

It is an Ulam number.

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 7 ways as a sum of consecutive naturals, for example, 8480 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (335595).

2^2151125 is an apocalyptic number.

2151125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2151125 is a deficient number, since it is larger than the sum of its proper divisors (533635).

2151125 is an equidigital number, since it uses as much as digits as its factorization.

2151125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17224 (or 17214 counting only the distinct ones).

The product of its digits is 100, while the sum is 17.

The square root of 2151125 is about 1466.6714015075. The cubic root of 2151125 is about 129.0887957040.

Adding to 2151125 its reverse (5211512), we get a palindrome (7362637).

The spelling of 2151125 in words is "two million, one hundred fifty-one thousand, one hundred twenty-five".