2587120538 has 4 divisors (see below), whose sum is σ = 3880680810. Its totient is φ = 1293560268.

The previous prime is 2587120517. The next prime is 2587120567. The reversal of 2587120538 is 8350217852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2551563169 + 35557369 = 50513^2 + 5963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2587120495 and 2587120504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646780133 + ... + 646780136.

Almost surely, 2^2587120538 is an apocalyptic number.

2587120538 is a deficient number, since it is larger than the sum of its proper divisors (1293560272).

2587120538 is a wasteful number, since it uses less digits than its factorization.

2587120538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293560271.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 2587120538 is about 50863.7448287088. The cubic root of 2587120538 is about 1372.7945758956.

The spelling of 2587120538 in words is "two billion, five hundred eighty-seven million, one hundred twenty thousand, five hundred thirty-eight".