5155555550 has 12 divisors (see below), whose sum is σ = 9589333416. Its totient is φ = 2062222200.

The previous prime is 5155555487. The next prime is 5155555553. The reversal of 5155555550 is 555555515.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5155555498 and 5155555507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155555553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51555506 + ... + 51555605.

It is an arithmetic number, because the mean of its divisors is an integer number (799111118).

Almost surely, 2^5155555550 is an apocalyptic number.

5155555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5155555550 is a deficient number, since it is larger than the sum of its proper divisors (4433777866).

5155555550 is a wasteful number, since it uses less digits than its factorization.

5155555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103111123 (or 103111118 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 41.

The square root of 5155555550 is about 71802.1973897735. The cubic root of 5155555550 is about 1727.5282453392.

The spelling of 5155555550 in words is "five billion, one hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty".