549529920 has 336 divisors, whose sum is σ = 2023676928. Its totient is φ = 141834240.

The previous prime is 549529919. The next prime is 549529949. The reversal of 549529920 is 29925945.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2877025 + ... + 2877215.

It is an arithmetic number, because the mean of its divisors is an integer number (6022848).

Almost surely, 2^549529920 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 549529920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011838464).

549529920 is an abundant number, since it is smaller than the sum of its proper divisors (1474147008).

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

549529920 is a wasteful number, since it uses less digits than its factorization.

549529920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 549529920 is about 23442.0545174692. The cubic root of 549529920 is about 819.0877819206.

The spelling of 549529920 in words is "five hundred forty-nine million, five hundred twenty-nine thousand, nine hundred twenty".