2555615137 has 4 divisors (see below), whose sum is σ = 2555774100. Its totient is φ = 2555456176.

The previous prime is 2555615129. The next prime is 2555615147. The reversal of 2555615137 is 7315165552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 857845521 + 1697769616 = 29289^2 + 41204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555615137 - 2³ = 2555615129 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2555615137.

It is not an unprimeable number, because it can be changed into a prime (2555615147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52258 + ... + 88555.

It is an arithmetic number, because the mean of its divisors is an integer number (638943525).

Almost surely, 2^2555615137 is an apocalyptic number.

It is an amenable number.

2555615137 is a deficient number, since it is larger than the sum of its proper divisors (158963).

2555615137 is a wasteful number, since it uses less digits than its factorization.

2555615137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158962.

The product of its digits is 157500, while the sum is 40.

The square root of 2555615137 is about 50553.0922595245. The cubic root of 2555615137 is about 1367.1992682482.

The spelling of 2555615137 in words is "two billion, five hundred fifty-five million, six hundred fifteen thousand, one hundred thirty-seven".