5138755555 has 4 divisors (see below), whose sum is σ = 6166506672. Its totient is φ = 4111004440.

The previous prime is 5138755547. The next prime is 5138755591. The reversal of 5138755555 is 5555578315.

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

It is not a de Polignac number, because 5138755555 - 2³ = 5138755547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5138755499 and 5138755508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513875551 + ... + 513875560.

It is an arithmetic number, because the mean of its divisors is an integer number (1541626668).

Almost surely, 2^5138755555 is an apocalyptic number.

5138755555 is a deficient number, since it is larger than the sum of its proper divisors (1027751117).

5138755555 is a wasteful number, since it uses less digits than its factorization.

5138755555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027751116.

The product of its digits is 2625000, while the sum is 49.

The square root of 5138755555 is about 71685.1139010046. The cubic root of 5138755555 is about 1725.6497508886.

The spelling of 5138755555 in words is "five billion, one hundred thirty-eight million, seven hundred fifty-five thousand, five hundred fifty-five".