550165980 has 288 divisors, whose sum is σ = 1995162624. Its totient is φ = 110702592.

The previous prime is 550165939. The next prime is 550165981. The reversal of 550165980 is 89561055.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550165981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1632372 + ... + 1632708.

It is an arithmetic number, because the mean of its divisors is an integer number (6927648).

Almost surely, 2^550165980 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 550165980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997581312).

550165980 is an abundant number, since it is smaller than the sum of its proper divisors (1444996644).

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

550165980 is a wasteful number, since it uses less digits than its factorization.

550165980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 550165980 is about 23455.6172376683. The cubic root of 550165980 is about 819.4036810654.

The spelling of 550165980 in words is "five hundred fifty million, one hundred sixty-five thousand, nine hundred eighty".