2540015 has 8 divisors (see below), whose sum is σ = 3208560. Its totient is φ = 1924992.

The previous prime is 2540011. The next prime is 2540033. The reversal of 2540015 is 5100452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2540015 - 2² = 2540011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2539975 and 2540002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540011) 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 7 ways as a sum of consecutive naturals, for example, 13274 + ... + 13463.

It is an arithmetic number, because the mean of its divisors is an integer number (401070).

2^2540015 is an apocalyptic number.

2540015 is a deficient number, since it is larger than the sum of its proper divisors (668545).

2540015 is a wasteful number, since it uses less digits than its factorization.

2540015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26761.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2540015 is about 1593.7424509625. The cubic root of 2540015 is about 136.4411675602.

Adding to 2540015 its reverse (5100452), we get a palindrome (7640467).

The spelling of 2540015 in words is "two million, five hundred forty thousand, fifteen".