2587496557 has 2 divisors, whose sum is σ = 2587496558. Its totient is φ = 2587496556.

The previous prime is 2587496539. The next prime is 2587496579. The reversal of 2587496557 is 7556947852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1837065321 + 750431236 = 42861^2 + 27394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2587496557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2587494557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293748278 + 1293748279.

It is an arithmetic number, because the mean of its divisors is an integer number (1293748279).

Almost surely, 2^2587496557 is an apocalyptic number.

It is an amenable number.

2587496557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587496557 is an equidigital number, since it uses as much as digits as its factorization.

2587496557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168000, while the sum is 58.

The square root of 2587496557 is about 50867.4410305846. The cubic root of 2587496557 is about 1372.8610812156.

The spelling of 2587496557 in words is "two billion, five hundred eighty-seven million, four hundred ninety-six thousand, five hundred fifty-seven".