2555857539 has 24 divisors (see below), whose sum is σ = 3724916832. Its totient is φ = 1688682240.

The previous prime is 2555857519. The next prime is 2555857567. The reversal of 2555857539 is 9357585552.

2555857539 is a `hidden beast` number, since 2 + 5 + 5 + 58 + 57 + 539 = 666.

It is not a de Polignac number, because 2555857539 - 2¹³ = 2555849347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555857519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522274 + ... + 527144.

It is an arithmetic number, because the mean of its divisors is an integer number (155204868).

Almost surely, 2^2555857539 is an apocalyptic number.

2555857539 is a deficient number, since it is larger than the sum of its proper divisors (1169059293).

2555857539 is a wasteful number, since it uses less digits than its factorization.

2555857539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387 (or 5384 counting only the distinct ones).

The product of its digits is 9450000, while the sum is 54.

The square root of 2555857539 is about 50555.4897019107. The cubic root of 2555857539 is about 1367.2424935047.

The spelling of 2555857539 in words is "two billion, five hundred fifty-five million, eight hundred fifty-seven thousand, five hundred thirty-nine".