2125543 has 4 divisors (see below), whose sum is σ = 2429200. Its totient is φ = 1821888.

The previous prime is 2125537. The next prime is 2125553. The reversal of 2125543 is 3455212.

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 2125543 - 2¹³ = 2117351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151818 + ... + 151831.

It is an arithmetic number, because the mean of its divisors is an integer number (607300).

2^2125543 is an apocalyptic number.

2125543 is a deficient number, since it is larger than the sum of its proper divisors (303657).

2125543 is an equidigital number, since it uses as much as digits as its factorization.

2125543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303656.

The product of its digits is 1200, while the sum is 22.

The square root of 2125543 is about 1457.9242092784. The cubic root of 2125543 is about 128.5750292348.

The spelling of 2125543 in words is "two million, one hundred twenty-five thousand, five hundred forty-three".