551199800 has 96 divisors (see below), whose sum is σ = 1325808000. Its totient is φ = 212983680.

The previous prime is 551199799. The next prime is 551199877. The reversal of 551199800 is 8991155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 919901 + ... + 920499.

It is an arithmetic number, because the mean of its divisors is an integer number (13810500).

Almost surely, 2^551199800 is an apocalyptic number.

551199800 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 551199800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662904000).

551199800 is an abundant number, since it is smaller than the sum of its proper divisors (774608200).

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

551199800 is a wasteful number, since it uses less digits than its factorization.

551199800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 551199800 is about 23477.6446859560. The cubic root of 551199800 is about 819.9166086126.

The spelling of 551199800 in words is "five hundred fifty-one million, one hundred ninety-nine thousand, eight hundred".