551011140 has 192 divisors, whose sum is σ = 1830366720. Its totient is φ = 137134080.

The previous prime is 551011133. The next prime is 551011189. The reversal of 551011140 is 41110155.

It is a happy number.

551011140 is a `hidden beast` number, since 5 + 510 + 11 + 140 = 666.

It is a super-2 number, since 2×551011140² = 607226552808199200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 63 ways as a sum of consecutive naturals, for example, 1771585 + ... + 1771895.

It is an arithmetic number, because the mean of its divisors is an integer number (9533160).

Almost surely, 2^551011140 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 551011140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915183360).

551011140 is an abundant number, since it is smaller than the sum of its proper divisors (1279355580).

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

551011140 is a wasteful number, since it uses less digits than its factorization.

551011140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 551011140 is about 23473.6264773895. The cubic root of 551011140 is about 819.8230532335.

Adding to 551011140 its reverse (41110155), we get a palindrome (592121295).

The spelling of 551011140 in words is "five hundred fifty-one million, eleven thousand, one hundred forty".