550133100 has 144 divisors (see below), whose sum is σ = 1929459840. Its totient is φ = 133358400.

The previous prime is 550133083. The next prime is 550133123. The reversal of 550133100 is 1331055.

It is a happy number.

550133100 is a `hidden beast` number, since 550 + 13 + 3 + 100 = 666.

It is a super-2 number, since 2×550133100² = 605292855431220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20439 + ... + 38961.

Almost surely, 2^550133100 is an apocalyptic number.

550133100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550133100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964729920).

550133100 is an abundant number, since it is smaller than the sum of its proper divisors (1379326740).

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

550133100 is a wasteful number, since it uses less digits than its factorization.

550133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18557 (or 18544 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 550133100 is about 23454.9163289917. The cubic root of 550133100 is about 819.3873571858.

Adding to 550133100 its reverse (1331055), we get a palindrome (551464155).

It can be divided in two parts, 5 and 50133100, that added together give a palindrome (50133105).

The spelling of 550133100 in words is "five hundred fifty million, one hundred thirty-three thousand, one hundred".