2546640517 has 2 divisors, whose sum is σ = 2546640518. Its totient is φ = 2546640516.

The previous prime is 2546640491. The next prime is 2546640581. The reversal of 2546640517 is 7150466452.

It is a happy number.

2546640517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2107360836 + 439279681 = 45906^2 + 20959^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546640517 - 2¹¹ = 2546638469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2546640517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2546640617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273320258 + 1273320259.

It is an arithmetic number, because the mean of its divisors is an integer number (1273320259).

Almost surely, 2^2546640517 is an apocalyptic number.

It is an amenable number.

2546640517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546640517 is an equidigital number, since it uses as much as digits as its factorization.

2546640517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2546640517 is about 50464.2498903927. The cubic root of 2546640517 is about 1365.5969814673.

The spelling of 2546640517 in words is "two billion, five hundred forty-six million, six hundred forty thousand, five hundred seventeen".