550555140 has 96 divisors (see below), whose sum is σ = 1664167680. Its totient is φ = 135579136.

The previous prime is 550555099. The next prime is 550555171. The reversal of 550555140 is 41555055.

It is a super-2 number, since 2×550555140² = 606221924360839200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 550555098 and 550555107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33142 + ... + 46898.

It is an arithmetic number, because the mean of its divisors is an integer number (17335080).

Almost surely, 2^550555140 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 550555140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832083840).

550555140 is an abundant number, since it is smaller than the sum of its proper divisors (1113612540).

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

550555140 is a wasteful number, since it uses less digits than its factorization.

550555140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13821 (or 13819 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 550555140 is about 23463.9114386327. The cubic root of 550555140 is about 819.5968373075.

The spelling of 550555140 in words is "five hundred fifty million, five hundred fifty-five thousand, one hundred forty".