2540507 has 4 divisors (see below), whose sum is σ = 2544216. Its totient is φ = 2536800.

The previous prime is 2540479. The next prime is 2540513. The reversal of 2540507 is 7050452.

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 2540507 - 2⁶ = 2540443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540537) 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, 494 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (636054).

2^2540507 is an apocalyptic number.

2540507 is a deficient number, since it is larger than the sum of its proper divisors (3709).

2540507 is an equidigital number, since it uses as much as digits as its factorization.

2540507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2540507 is about 1593.8967971610. The cubic root of 2540507 is about 136.4499765266.

Adding to 2540507 its reverse (7050452), we get a palindrome (9590959).

The spelling of 2540507 in words is "two million, five hundred forty thousand, five hundred seven".