549472081 has 2 divisors, whose sum is σ = 549472082. Its totient is φ = 549472080.

The previous prime is 549472061. The next prime is 549472109. The reversal of 549472081 is 180274945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315382081 + 234090000 = 17759^2 + 15300^2 .

It is a cyclic number.

It is not a de Polignac number, because 549472081 - 2⁷ = 549471953 is a prime.

It is a super-2 number, since 2×549472081² = 603839135596941122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (549472031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274736040 + 274736041.

It is an arithmetic number, because the mean of its divisors is an integer number (274736041).

Almost surely, 2^549472081 is an apocalyptic number.

It is an amenable number.

549472081 is a deficient number, since it is larger than the sum of its proper divisors (1).

549472081 is an equidigital number, since it uses as much as digits as its factorization.

549472081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 549472081 is about 23440.8208260718. The cubic root of 549472081 is about 819.0590440978.

The spelling of 549472081 in words is "five hundred forty-nine million, four hundred seventy-two thousand, eighty-one".