2540159 has 4 divisors (see below), whose sum is σ = 2555016.
Its totient is φ = 2525304.
The previous prime is 2540141. The next prime is 2540173. The reversal of 2540159 is 9510452.
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 2540159 - 220 = 1491583 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 (2540179) 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, 7169 + ... + 7514.
It is an arithmetic number, because the mean of its divisors is an integer number (638754).
22540159 is an apocalyptic number.
2540159 is a deficient number, since it is larger than the sum of its proper divisors (14857).
2540159 is a wasteful number, since it uses less digits than its factorization.
2540159 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14856.
The product of its (nonzero) digits is 1800, while the sum is 26.
The square root of 2540159 is about 1593.7876270068.
The cubic root of 2540159 is about 136.4437459120.
The spelling of 2540159 in words is "two million, five hundred forty thousand, one hundred fifty-nine".