2591555587 has 2 divisors, whose sum is σ = 2591555588. Its totient is φ = 2591555586.

The previous prime is 2591555569. The next prime is 2591555609. The reversal of 2591555587 is 7855551952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2591555587 - 2⁷ = 2591555459 is a prime.

It is not a weakly prime, because it can be changed into another prime (2591555387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295777793 + 1295777794.

It is an arithmetic number, because the mean of its divisors is an integer number (1295777794).

Almost surely, 2^2591555587 is an apocalyptic number.

2591555587 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591555587 is an equidigital number, since it uses as much as digits as its factorization.

2591555587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150000, while the sum is 52.

The square root of 2591555587 is about 50907.3235104734. The cubic root of 2591555587 is about 1373.5785794948.

The spelling of 2591555587 in words is "two billion, five hundred ninety-one million, five hundred fifty-five thousand, five hundred eighty-seven".