550530331155 has 80 divisors (see below), whose sum is σ = 1128021048000. Its totient is φ = 251634843648.

The previous prime is 550530331139. The next prime is 550530331157. The reversal of 550530331155 is 551133035055.

550530331155 is a `hidden beast` number, since 5 + 5 + 0 + 530 + 3 + 3 + 115 + 5 = 666.

It is not a de Polignac number, because 550530331155 - 2⁴ = 550530331139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550530331157) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37553587 + ... + 37568243.

It is an arithmetic number, because the mean of its divisors is an integer number (14100263100).

Almost surely, 2^550530331155 is an apocalyptic number.

550530331155 is an abundant number, since it is smaller than the sum of its proper divisors (577490716845).

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

550530331155 is a wasteful number, since it uses less digits than its factorization.

550530331155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27930 (or 27921 counting only the distinct ones).

The product of its (nonzero) digits is 84375, while the sum is 36.

The spelling of 550530331155 in words is "five hundred fifty billion, five hundred thirty million, three hundred thirty-one thousand, one hundred fifty-five".