551423600 has 120 divisors (see below), whose sum is σ = 1630624800. Its totient is φ = 174504960.

The previous prime is 551423573. The next prime is 551423651. The reversal of 551423600 is 6324155.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 551423600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28826 + ... + 43974.

It is an arithmetic number, because the mean of its divisors is an integer number (13588540).

Almost surely, 2^551423600 is an apocalyptic number.

551423600 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 551423600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815312400).

551423600 is an abundant number, since it is smaller than the sum of its proper divisors (1079201200).

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

551423600 is a wasteful number, since it uses less digits than its factorization.

551423600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15187 (or 15176 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 551423600 is about 23482.4104384537. The cubic root of 551423600 is about 820.0275620321.

Adding to 551423600 its reverse (6324155), we get a palindrome (557747755).

The spelling of 551423600 in words is "five hundred fifty-one million, four hundred twenty-three thousand, six hundred".