551126400 has 384 divisors, whose sum is σ = 2103615360. Its totient is φ = 125337600.

The previous prime is 551126377. The next prime is 551126413. The reversal of 551126400 is 4621155.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 1795047 + ... + 1795353.

It is an arithmetic number, because the mean of its divisors is an integer number (5478165).

Almost surely, 2^551126400 is an apocalyptic number.

551126400 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 551126400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1051807680).

551126400 is an abundant number, since it is smaller than the sum of its proper divisors (1552488960).

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

551126400 is a wasteful number, since it uses less digits than its factorization.

551126400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 551126400 is about 23476.0814447386. The cubic root of 551126400 is about 819.8802125238.

Adding to 551126400 its reverse (4621155), we get a palindrome (555747555).

The spelling of 551126400 in words is "five hundred fifty-one million, one hundred twenty-six thousand, four hundred".