55305444450 has 48 divisors (see below), whose sum is σ = 137950384896. Its totient is φ = 14662862400.

The previous prime is 55305444427. The next prime is 55305444479. The reversal of 55305444450 is 5444450355.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55305444399 and 55305444408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039666 + ... + 1091565.

It is an arithmetic number, because the mean of its divisors is an integer number (2873966352).

Almost surely, 2^55305444450 is an apocalyptic number.

55305444450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55305444450 is an abundant number, since it is smaller than the sum of its proper divisors (82644940446).

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

55305444450 is a wasteful number, since it uses less digits than its factorization.

55305444450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131419 (or 2131414 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 39.

The spelling of 55305444450 in words is "fifty-five billion, three hundred five million, four hundred forty-four thousand, four hundred fifty".