2540497 has 4 divisors (see below), whose sum is σ = 2689956. Its totient is φ = 2391040.

The previous prime is 2540479. The next prime is 2540513. The reversal of 2540497 is 7940452.

2540497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 440896 = 1449^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540497 - 2¹¹ = 2538449 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74704 + ... + 74737.

It is an arithmetic number, because the mean of its divisors is an integer number (672489).

2^2540497 is an apocalyptic number.

It is an amenable number.

2540497 is a deficient number, since it is larger than the sum of its proper divisors (149459).

2540497 is a wasteful number, since it uses less digits than its factorization.

2540497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149458.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2540497 is about 1593.8936601919. The cubic root of 2540497 is about 136.4497974939.

The spelling of 2540497 in words is "two million, five hundred forty thousand, four hundred ninety-seven".