55305255550 has 24 divisors (see below), whose sum is σ = 103113322200. Its totient is φ = 22069296480.

The previous prime is 55305255527. The next prime is 55305255553. The reversal of 55305255550 is 5555250355.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55305255553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1298985 + ... + 1340884.

It is an arithmetic number, because the mean of its divisors is an integer number (4296388425).

Almost surely, 2^55305255550 is an apocalyptic number.

55305255550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55305255550 is a deficient number, since it is larger than the sum of its proper divisors (47808066650).

55305255550 is a wasteful number, since it uses less digits than its factorization.

55305255550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640300 (or 2640295 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 40.

The spelling of 55305255550 in words is "fifty-five billion, three hundred five million, two hundred fifty-five thousand, five hundred fifty".