2540931 has 4 divisors (see below), whose sum is σ = 3387912. Its totient is φ = 1693952.

The previous prime is 2540903. The next prime is 2540933. The reversal of 2540931 is 1390452.

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 2540931 - 2¹¹ = 2538883 is a prime.

It is a super-2 number, since 2×2540931² = 12912660693522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2540933) 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, 423486 + ... + 423491.

It is an arithmetic number, because the mean of its divisors is an integer number (846978).

2^2540931 is an apocalyptic number.

2540931 is a deficient number, since it is larger than the sum of its proper divisors (846981).

2540931 is an equidigital number, since it uses as much as digits as its factorization.

2540931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846980.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2540931 is about 1594.0297989686. The cubic root of 2540931 is about 136.4575670813.

The spelling of 2540931 in words is "two million, five hundred forty thousand, nine hundred thirty-one".