7291534513 has 2 divisors, whose sum is σ = 7291534514. Its totient is φ = 7291534512.

The previous prime is 7291534507. The next prime is 7291534559. The reversal of 7291534513 is 3154351927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3736632384 + 3554902129 = 61128^2 + 59623^2 .

It is an emirp because it is prime and its reverse (3154351927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7291534513 - 2⁹ = 7291534001 is a prime.

It is not a weakly prime, because it can be changed into another prime (7291534573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645767256 + 3645767257.

It is an arithmetic number, because the mean of its divisors is an integer number (3645767257).

Almost surely, 2^7291534513 is an apocalyptic number.

It is an amenable number.

7291534513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7291534513 is an equidigital number, since it uses as much as digits as its factorization.

7291534513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 7291534513 is about 85390.4825668528. The cubic root of 7291534513 is about 1939.1272611974.

The spelling of 7291534513 in words is "seven billion, two hundred ninety-one million, five hundred thirty-four thousand, five hundred thirteen".