551801152 has 84 divisors (see below), whose sum is σ = 1282171680. Its totient is φ = 234925824.

The previous prime is 551801143. The next prime is 551801153. The reversal of 551801152 is 251108155.

It is a super-2 number, since 2×551801152² = 608969022697054208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 551801152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551801153) 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 11 ways as a sum of consecutive naturals, for example, 560853 + ... + 561835.

Almost surely, 2^551801152 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 551801152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641085840).

551801152 is an abundant number, since it is smaller than the sum of its proper divisors (730370528).

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

551801152 is a wasteful number, since it uses less digits than its factorization.

551801152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 551801152 is about 23490.4481013028. The cubic root of 551801152 is about 820.2146731222.

The spelling of 551801152 in words is "five hundred fifty-one million, eight hundred one thousand, one hundred fifty-two".