2125511 has 4 divisors (see below), whose sum is σ = 2237400. Its totient is φ = 2013624.

The previous prime is 2125477. The next prime is 2125517. The reversal of 2125511 is 1155212.

2125511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125511 - 2¹⁴ = 2109127 is a prime.

It is a super-2 number, since 2×2125511² = 9035594022242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2125511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125517) 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 3 ways as a sum of consecutive naturals, for example, 55916 + ... + 55953.

It is an arithmetic number, because the mean of its divisors is an integer number (559350).

2^2125511 is an apocalyptic number.

2125511 is a deficient number, since it is larger than the sum of its proper divisors (111889).

2125511 is a wasteful number, since it uses less digits than its factorization.

2125511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111888.

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

The square root of 2125511 is about 1457.9132347297. The cubic root of 2125511 is about 128.5743840003.

Subtracting from 2125511 its reverse (1155212), we obtain a cube (970299 = 99³).

The spelling of 2125511 in words is "two million, one hundred twenty-five thousand, five hundred eleven".