542455217 has 2 divisors, whose sum is σ = 542455218. Its totient is φ = 542455216.

The previous prime is 542455201. The next prime is 542455223. The reversal of 542455217 is 712554245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489471376 + 52983841 = 22124^2 + 7279^2 .

It is a cyclic number.

It is not a de Polignac number, because 542455217 - 2⁴ = 542455201 is a prime.

It is equal to p_28470392 and since 542455217 and 28470392 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (542455117) 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, 271227608 + 271227609.

It is an arithmetic number, because the mean of its divisors is an integer number (271227609).

Almost surely, 2^542455217 is an apocalyptic number.

It is an amenable number.

542455217 is a deficient number, since it is larger than the sum of its proper divisors (1).

542455217 is an equidigital number, since it uses as much as digits as its factorization.

542455217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56000, while the sum is 35.

The square root of 542455217 is about 23290.6680239103. The cubic root of 542455217 is about 815.5575829872.

The spelling of 542455217 in words is "five hundred forty-two million, four hundred fifty-five thousand, two hundred seventeen".