2151275 has 24 divisors (see below), whose sum is σ = 3214080. Its totient is φ = 1395360.

The previous prime is 2151271. The next prime is 2151283. The reversal of 2151275 is 5721512.

It is a happy number.

2151275 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 2151275 - 2² = 2151271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2151275.

It is not an unprimeable number, because it can be changed into a prime (2151271) 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 23 ways as a sum of consecutive naturals, for example, 3002 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2^2151275 is an apocalyptic number.

2151275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2151275 is a deficient number, since it is larger than the sum of its proper divisors (1062805).

2151275 is a wasteful number, since it uses less digits than its factorization.

2151275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 678 counting only the distinct ones).

The product of its digits is 700, while the sum is 23.

The square root of 2151275 is about 1466.7225368146. The cubic root of 2151275 is about 129.0917961292.

Adding to 2151275 its reverse (5721512), we get a palindrome (7872787).

The spelling of 2151275 in words is "two million, one hundred fifty-one thousand, two hundred seventy-five".