2151075 has 48 divisors (see below), whose sum is σ = 3928320. Its totient is φ = 1034880.

The previous prime is 2151073. The next prime is 2151089. The reversal of 2151075 is 5701512.

It is not a de Polignac number, because 2151075 - 2¹ = 2151073 is a prime.

2151075 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2151073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50004 + ... + 50046.

It is an arithmetic number, because the mean of its divisors is an integer number (81840).

2^2151075 is an apocalyptic number.

2151075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2151075 is a deficient number, since it is larger than the sum of its proper divisors (1777245).

2151075 is a wasteful number, since it uses less digits than its factorization.

2151075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 2151075 is about 1466.6543560089. The cubic root of 2151075 is about 129.0877955312.

Adding to 2151075 its reverse (5701512), we get a palindrome (7852587).

The spelling of 2151075 in words is "two million, one hundred fifty-one thousand, seventy-five".