549940524 has 72 divisors (see below), whose sum is σ = 1502953200. Its totient is φ = 156046464.

The previous prime is 549940513. The next prime is 549940529. The reversal of 549940524 is 425049945.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (549940529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84474 + ... + 90750.

It is an arithmetic number, because the mean of its divisors is an integer number (20874350).

Almost surely, 2^549940524 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 549940524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751476600).

549940524 is an abundant number, since it is smaller than the sum of its proper divisors (953012676).

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

549940524 is a wasteful number, since it uses less digits than its factorization.

549940524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447 (or 6438 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 549940524 is about 23450.8107322540. The cubic root of 549940524 is about 819.2917362318.

The spelling of 549940524 in words is "five hundred forty-nine million, nine hundred forty thousand, five hundred twenty-four".