542526169 has 2 divisors, whose sum is σ = 542526170. Its totient is φ = 542526168.

The previous prime is 542526167. The next prime is 542526211. The reversal of 542526169 is 961625245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519840000 + 22686169 = 22800^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 542526169 - 2¹ = 542526167 is a prime.

It is a super-2 number, since 2×542526169² = 588669288099633122, which contains 22 as substring.

Together with 542526167, it forms a pair of twin primes.

It is equal to p_28473907 and since 542526169 and 28473907 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 (542526167) 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, 271263084 + 271263085.

It is an arithmetic number, because the mean of its divisors is an integer number (271263085).

Almost surely, 2^542526169 is an apocalyptic number.

It is an amenable number.

542526169 is a deficient number, since it is larger than the sum of its proper divisors (1).

542526169 is an equidigital number, since it uses as much as digits as its factorization.

542526169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 542526169 is about 23292.1911592705. The cubic root of 542526169 is about 815.5931391752.

The spelling of 542526169 in words is "five hundred forty-two million, five hundred twenty-six thousand, one hundred sixty-nine".