2540077313 has 4 divisors (see below), whose sum is σ = 2541579348. Its totient is φ = 2538575280.

The previous prime is 2540077307. The next prime is 2540077333. The reversal of 2540077313 is 3137700452.

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 1387339009 + 1152738304 = 37247^2 + 33952^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540077313 - 2¹⁰ = 2540076289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2540077313.

It is not an unprimeable number, because it can be changed into a prime (2540077333) 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, 748478 + ... + 751863.

It is an arithmetic number, because the mean of its divisors is an integer number (635394837).

Almost surely, 2^2540077313 is an apocalyptic number.

It is an amenable number.

2540077313 is a deficient number, since it is larger than the sum of its proper divisors (1502035).

2540077313 is a wasteful number, since it uses less digits than its factorization.

2540077313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502034.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 2540077313 is about 50399.1796857846. The cubic root of 2540077313 is about 1364.4228330017.

Adding to 2540077313 its reverse (3137700452), we get a palindrome (5677777765).

The spelling of 2540077313 in words is "two billion, five hundred forty million, seventy-seven thousand, three hundred thirteen".