5155555555 has 4 divisors (see below), whose sum is σ = 6186666672. Its totient is φ = 4124444440.

The previous prime is 5155555553. The next prime is 5155555579. The reversal of 5155555555 is 5555555515.

It is a happy number.

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

It is not a de Polignac number, because 5155555555 - 2¹ = 5155555553 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

5155555555 is a modest number, since divided by 55555 gives 51555 as remainder.

It is not an unprimeable number, because it can be changed into a prime (5155555553) 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, 515555551 + ... + 515555560.

It is an arithmetic number, because the mean of its divisors is an integer number (1546666668).

Almost surely, 2^5155555555 is an apocalyptic number.

5155555555 is a deficient number, since it is larger than the sum of its proper divisors (1031111117).

5155555555 is a wasteful number, since it uses less digits than its factorization.

5155555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031111116.

The product of its digits is 1953125, while the sum is 46.

The square root of 5155555555 is about 71802.1974245914. The cubic root of 5155555555 is about 1727.5282458977.

The spelling of 5155555555 in words is "five billion, one hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-five".