55420571950 has 12 divisors (see below), whose sum is σ = 103082263920. Its totient is φ = 22168228760.

The previous prime is 55420571881. The next prime is 55420571963. The reversal of 55420571950 is 5917502455.

It is a junction number, because it is equal to n+sod(n) for n = 55420571897 and 55420571906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554205670 + ... + 554205769.

It is an arithmetic number, because the mean of its divisors is an integer number (8590188660).

Almost surely, 2^55420571950 is an apocalyptic number.

55420571950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55420571950 is a deficient number, since it is larger than the sum of its proper divisors (47661691970).

55420571950 is a wasteful number, since it uses less digits than its factorization.

55420571950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108411451 (or 1108411446 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 55420571950 in words is "fifty-five billion, four hundred twenty million, five hundred seventy-one thousand, nine hundred fifty".