550131138 has 24 divisors (see below), whose sum is σ = 1206314928. Its totient is φ = 181167192.

The previous prime is 550131119. The next prime is 550131167. The reversal of 550131138 is 831131055.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182620 + ... + 185607.

It is an arithmetic number, because the mean of its divisors is an integer number (50263122).

Almost surely, 2^550131138 is an apocalyptic number.

550131138 is an abundant number, since it is smaller than the sum of its proper divisors (656183790).

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

550131138 is a wasteful number, since it uses less digits than its factorization.

550131138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368318 (or 368315 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 550131138 is about 23454.8745040343. The cubic root of 550131138 is about 819.3863830943.

The spelling of 550131138 in words is "five hundred fifty million, one hundred thirty-one thousand, one hundred thirty-eight".