551454100 has 72 divisors (see below), whose sum is σ = 1290542400. Its totient is φ = 203846400.

The previous prime is 551454073. The next prime is 551454103. The reversal of 551454100 is 1454155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551454103) by changing a digit.

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, 74361 + ... + 81439.

It is an arithmetic number, because the mean of its divisors is an integer number (17924200).

Almost surely, 2^551454100 is an apocalyptic number.

551454100 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 551454100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645271200).

551454100 is an abundant number, since it is smaller than the sum of its proper divisors (739088300).

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

551454100 is a wasteful number, since it uses less digits than its factorization.

551454100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153 (or 7146 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 551454100 is about 23483.0598517314. The cubic root of 551454100 is about 820.0426807053.

Subtracting from 551454100 its reverse (1454155), we obtain a palindrome (549999945).

The spelling of 551454100 in words is "five hundred fifty-one million, four hundred fifty-four thousand, one hundred".