2555587521 has 12 divisors (see below), whose sum is σ = 3791172372. Its totient is φ = 1657678176.

The previous prime is 2555587501. The next prime is 2555587583. The reversal of 2555587521 is 1257855552.

2555587521 is a `hidden beast` number, since 2 + 5 + 5 + 558 + 75 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1464210225 + 1091377296 = 38265^2 + 33036^2 .

It is not a de Polignac number, because 2555587521 - 2¹³ = 2555579329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555587501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3836886 + ... + 3837551.

It is an arithmetic number, because the mean of its divisors is an integer number (315931031).

Almost surely, 2^2555587521 is an apocalyptic number.

It is an amenable number.

2555587521 is a deficient number, since it is larger than the sum of its proper divisors (1235584851).

2555587521 is a wasteful number, since it uses less digits than its factorization.

2555587521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674480 (or 7674477 counting only the distinct ones).

The product of its digits is 700000, while the sum is 45.

The square root of 2555587521 is about 50552.8191202034. The cubic root of 2555587521 is about 1367.1943435746.

The spelling of 2555587521 in words is "two billion, five hundred fifty-five million, five hundred eighty-seven thousand, five hundred twenty-one".