2721159 has 24 divisors (see below), whose sum is σ = 4592640.
Its totient is φ = 1520208.
The previous prime is 2721143. The next prime is 2721163. The reversal of 2721159 is 9511272.
It is not a de Polignac number, because 2721159 - 24 = 2721143 is a prime.
2721159 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2721109) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2502 + ... + 3420.
It is an arithmetic number, because the mean of its divisors is an integer number (191360).
22721159 is an apocalyptic number.
2721159 is a deficient number, since it is larger than the sum of its proper divisors (1871481).
2721159 is a wasteful number, since it uses less digits than its factorization.
2721159 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 979 (or 976 counting only the distinct ones).
The product of its digits is 1260, while the sum is 27.
The square root of 2721159 is about 1649.5935863115.
The cubic root of 2721159 is about 139.6104647837.
It can be divided in two parts, 272 and 1159, that added together give a triangular number (1431 = T53).
The spelling of 2721159 in words is "two million, seven hundred twenty-one thousand, one hundred fifty-nine".