551855304 has 576 divisors, whose sum is σ = 2192486400. Its totient is φ = 121305600.

The previous prime is 551855303. The next prime is 551855327. The reversal of 551855304 is 403558155.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551855303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 17801769 + ... + 17801799.

It is an arithmetic number, because the mean of its divisors is an integer number (3806400).

Almost surely, 2^551855304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551855304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096243200).

551855304 is an abundant number, since it is smaller than the sum of its proper divisors (1640631096).

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

551855304 is a wasteful number, since it uses less digits than its factorization.

551855304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 551855304 is about 23491.6007117438. The cubic root of 551855304 is about 820.2415033260.

The spelling of 551855304 in words is "five hundred fifty-one million, eight hundred fifty-five thousand, three hundred four".