549621072 has 640 divisors, whose sum is σ = 2239856640. Its totient is φ = 124416000.

The previous prime is 549621053. The next prime is 549621097. The reversal of 549621072 is 270126945.

549621072 is a `hidden beast` number, since 549 + 6 + 2 + 107 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13405372 + ... + 13405412.

It is an arithmetic number, because the mean of its divisors is an integer number (3499776).

Almost surely, 2^549621072 is an apocalyptic number.

549621072 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549621072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119928320).

549621072 is an abundant number, since it is smaller than the sum of its proper divisors (1690235568).

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

549621072 is a wasteful number, since it uses less digits than its factorization.

549621072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 549621072 is about 23443.9986350452. The cubic root of 549621072 is about 819.1330675117.

The spelling of 549621072 in words is "five hundred forty-nine million, six hundred twenty-one thousand, seventy-two".