2591031587 has 2 divisors, whose sum is σ = 2591031588. Its totient is φ = 2591031586.

The previous prime is 2591031503. The next prime is 2591031601. The reversal of 2591031587 is 7851301952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2591031587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2591030587) 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 as a sum of consecutive naturals, namely, 1295515793 + 1295515794.

It is an arithmetic number, because the mean of its divisors is an integer number (1295515794).

Almost surely, 2^2591031587 is an apocalyptic number.

2591031587 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591031587 is an equidigital number, since it uses as much as digits as its factorization.

2591031587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 2591031587 is about 50902.1766430474. The cubic root of 2591031587 is about 1373.4859962738.

The spelling of 2591031587 in words is "two billion, five hundred ninety-one million, thirty-one thousand, five hundred eighty-seven".