550693800 has 144 divisors (see below), whose sum is σ = 1859998140. Its totient is φ = 146012160.

The previous prime is 550693769. The next prime is 550693811. The reversal of 550693800 is 8396055.

It can be written as a sum of positive squares in 6 ways, for example, as 247307076 + 303386724 = 15726^2 + 17418^2 .

It is a super-2 number, since 2×550693800² = 606527322716880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 353824 + ... + 355376.

Almost surely, 2^550693800 is an apocalyptic number.

550693800 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 550693800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929999070).

550693800 is an abundant number, since it is smaller than the sum of its proper divisors (1309304340).

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

550693800 is a wasteful number, since it uses less digits than its factorization.

550693800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 550693800 is about 23466.8660029413. The cubic root of 550693800 is about 819.6656380203.

The spelling of 550693800 in words is "five hundred fifty million, six hundred ninety-three thousand, eight hundred".