550421055 has 32 divisors (see below), whose sum is σ = 979542720. Its totient is φ = 293253120.

The previous prime is 550421041. The next prime is 550421071. The reversal of 550421055 is 550124055.

550421055 is a `hidden beast` number, since 550 + 4 + 2 + 105 + 5 = 666.

550421055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550421055 - 2¹⁸ = 550158911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198559 + ... + 201311.

It is an arithmetic number, because the mean of its divisors is an integer number (30610710).

Almost surely, 2^550421055 is an apocalyptic number.

550421055 is a deficient number, since it is larger than the sum of its proper divisors (429121665).

550421055 is a wasteful number, since it uses less digits than its factorization.

550421055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248 (or 4242 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 550421055 is about 23461.0540044560. The cubic root of 550421055 is about 819.5302956440.

The spelling of 550421055 in words is "five hundred fifty million, four hundred twenty-one thousand, fifty-five".