542573321 has 2 divisors, whose sum is σ = 542573322. Its totient is φ = 542573320.

The previous prime is 542573261. The next prime is 542573347. The reversal of 542573321 is 123375245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278055625 + 264517696 = 16675^2 + 16264^2 .

It is a cyclic number.

It is not a de Polignac number, because 542573321 - 2¹⁸ = 542311177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542573371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271286660 + 271286661.

It is an arithmetic number, because the mean of its divisors is an integer number (271286661).

Almost surely, 2^542573321 is an apocalyptic number.

It is an amenable number.

542573321 is a deficient number, since it is larger than the sum of its proper divisors (1).

542573321 is an equidigital number, since it uses as much as digits as its factorization.

542573321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 32.

The square root of 542573321 is about 23293.2033219993. The cubic root of 542573321 is about 815.6167667504.

The spelling of 542573321 in words is "five hundred forty-two million, five hundred seventy-three thousand, three hundred twenty-one".