5155665550 has 48 divisors (see below), whose sum is σ = 11026829952. Its totient is φ = 1756792800.

The previous prime is 5155665539. The next prime is 5155665551. The reversal of 5155665550 is 555665515.

It is a junction number, because it is equal to n+sod(n) for n = 5155665497 and 5155665506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155665551) 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 23 ways as a sum of consecutive naturals, for example, 11865 + ... + 102235.

It is an arithmetic number, because the mean of its divisors is an integer number (229725624).

Almost surely, 2^5155665550 is an apocalyptic number.

5155665550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5155665550 is an abundant number, since it is smaller than the sum of its proper divisors (5871164402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5155665550 is a wasteful number, since it uses less digits than its factorization.

5155665550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90553 (or 90548 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 43.

The square root of 5155665550 is about 71802.9633789581. The cubic root of 5155665550 is about 1727.5405315519.

The spelling of 5155665550 in words is "five billion, one hundred fifty-five million, six hundred sixty-five thousand, five hundred fifty".