55250005550 has 24 divisors (see below), whose sum is σ = 105154898376. Its totient is φ = 21586047840.

The previous prime is 55250005549. The next prime is 55250005553. The reversal of 55250005550 is 5550005255.

55250005550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55250005550² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55250005553) 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, 12846689 + ... + 12850988.

It is an arithmetic number, because the mean of its divisors is an integer number (4381454099).

Almost surely, 2^55250005550 is an apocalyptic number.

55250005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55250005550 is a deficient number, since it is larger than the sum of its proper divisors (49904892826).

55250005550 is a wasteful number, since it uses less digits than its factorization.

55250005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25697732 (or 25697727 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 32.

The spelling of 55250005550 in words is "fifty-five billion, two hundred fifty million, five thousand, five hundred fifty".