545504081 has 2 divisors, whose sum is σ = 545504082. Its totient is φ = 545504080.

The previous prime is 545504059. The next prime is 545504189. The reversal of 545504081 is 180405545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407676481 + 137827600 = 20191^2 + 11740^2 .

It is a cyclic number.

It is not a de Polignac number, because 545504081 - 2¹⁴ = 545487697 is a prime.

It is a super-2 number, since 2×545504081² = 595149404775309122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545504021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272752040 + 272752041.

It is an arithmetic number, because the mean of its divisors is an integer number (272752041).

Almost surely, 2^545504081 is an apocalyptic number.

It is an amenable number.

545504081 is a deficient number, since it is larger than the sum of its proper divisors (1).

545504081 is an equidigital number, since it uses as much as digits as its factorization.

545504081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 545504081 is about 23356.0287934400. The cubic root of 545504081 is about 817.0826736456.

The spelling of 545504081 in words is "five hundred forty-five million, five hundred four thousand, eighty-one".