2725831 has 4 divisors (see below), whose sum is σ = 2886192. Its totient is φ = 2565472.

The previous prime is 2725829. The next prime is 2725837. The reversal of 2725831 is 1385272.

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 2725831 - 2¹ = 2725829 is a prime.

It is a super-2 number, since 2×2725831² = 14860309281122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2725831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80155 + ... + 80188.

It is an arithmetic number, because the mean of its divisors is an integer number (721548).

2^2725831 is an apocalyptic number.

2725831 is a deficient number, since it is larger than the sum of its proper divisors (160361).

2725831 is a wasteful number, since it uses less digits than its factorization.

2725831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160360.

The product of its digits is 3360, while the sum is 28.

The square root of 2725831 is about 1651.0090853778. The cubic root of 2725831 is about 139.6903188894.

The spelling of 2725831 in words is "two million, seven hundred twenty-five thousand, eight hundred thirty-one".