550356503121 has 12 divisors (see below), whose sum is σ = 794974785540. Its totient is φ = 366897231360.

The previous prime is 550356503113. The next prime is 550356503129. The reversal of 550356503121 is 121305653055.

550356503121 is a `hidden beast` number, since 5 + 503 + 56 + 50 + 31 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (550356503113) and next prime (550356503129).

It can be written as a sum of positive squares in 2 ways, for example, as 4879721025 + 545476782096 = 69855^2 + 738564^2 .

It is not a de Polignac number, because 550356503121 - 2³ = 550356503113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550356503129) 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, 77856 + ... + 1052033.

It is an arithmetic number, because the mean of its divisors is an integer number (66247898795).

Almost surely, 2^550356503121 is an apocalyptic number.

It is an amenable number.

550356503121 is a deficient number, since it is larger than the sum of its proper divisors (244618282419).

550356503121 is a wasteful number, since it uses less digits than its factorization.

550356503121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184016 (or 1184013 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 550356503121 in words is "five hundred fifty billion, three hundred fifty-six million, five hundred three thousand, one hundred twenty-one".