2587981551 has 16 divisors (see below), whose sum is σ = 3603550464. Its totient is φ = 1648986944.

The previous prime is 2587981549. The next prime is 2587981579. The reversal of 2587981551 is 1551897852.

It is a cyclic number.

It is not a de Polignac number, because 2587981551 - 2¹ = 2587981549 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2587981494 and 2587981503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587981751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75835 + ... + 104531.

It is an arithmetic number, because the mean of its divisors is an integer number (225221904).

Almost surely, 2^2587981551 is an apocalyptic number.

2587981551 is a deficient number, since it is larger than the sum of its proper divisors (1015568913).

2587981551 is a wasteful number, since it uses less digits than its factorization.

2587981551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30030.

The product of its digits is 1008000, while the sum is 51.

The square root of 2587981551 is about 50872.2080413265. The cubic root of 2587981551 is about 1372.9468510934.

The spelling of 2587981551 in words is "two billion, five hundred eighty-seven million, nine hundred eighty-one thousand, five hundred fifty-one".