550555056021 has 8 divisors (see below), whose sum is σ = 738129062944. Its totient is φ = 365008876560.

The previous prime is 550555056013. The next prime is 550555056047. The reversal of 550555056021 is 120650555055.

550555056021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550555056021 - 2³ = 550555056013 is a prime.

It is a super-2 number, since 2×550555056021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550555056011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506956231 + ... + 506957316.

It is an arithmetic number, because the mean of its divisors is an integer number (92266132868).

Almost surely, 2^550555056021 is an apocalyptic number.

It is an amenable number.

550555056021 is a deficient number, since it is larger than the sum of its proper divisors (187574006923).

550555056021 is a wasteful number, since it uses less digits than its factorization.

550555056021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013913731.

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 550555056021 in words is "five hundred fifty billion, five hundred fifty-five million, fifty-six thousand, twenty-one".