545080321 has 2 divisors, whose sum is σ = 545080322. Its totient is φ = 545080320.

The previous prime is 545080219. The next prime is 545080343. The reversal of 545080321 is 123080545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345960000 + 199120321 = 18600^2 + 14111^2 .

It is a cyclic number.

It is not a de Polignac number, because 545080321 - 2²¹ = 542983169 is a prime.

It is a super-2 number, since 2×545080321² = 594225112682926082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545080321.

It is not a weakly prime, because it can be changed into another prime (545080391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272540160 + 272540161.

It is an arithmetic number, because the mean of its divisors is an integer number (272540161).

Almost surely, 2^545080321 is an apocalyptic number.

It is an amenable number.

545080321 is a deficient number, since it is larger than the sum of its proper divisors (1).

545080321 is an equidigital number, since it uses as much as digits as its factorization.

545080321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 545080321 is about 23346.9552832912. The cubic root of 545080321 is about 816.8710426899.

The spelling of 545080321 in words is "five hundred forty-five million, eighty thousand, three hundred twenty-one".