2725851 has 4 divisors (see below), whose sum is σ = 3634472. Its totient is φ = 1817232.

The previous prime is 2725847. The next prime is 2725871. The reversal of 2725851 is 1585272.

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

It is not a de Polignac number, because 2725851 - 2² = 2725847 is a prime.

It is a D-number.

It is a Duffinian number.

2725851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2725841) 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, 454306 + ... + 454311.

It is an arithmetic number, because the mean of its divisors is an integer number (908618).

2^2725851 is an apocalyptic number.

2725851 is a deficient number, since it is larger than the sum of its proper divisors (908621).

2725851 is an equidigital number, since it uses as much as digits as its factorization.

2725851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908620.

The product of its digits is 5600, while the sum is 30.

The square root of 2725851 is about 1651.0151422685. The cubic root of 2725851 is about 139.6906605344.

It can be divided in two parts, 27 and 25851, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 2725851 in words is "two million, seven hundred twenty-five thousand, eight hundred fifty-one".