85052543 has 2 divisors, whose sum is σ = 85052544. Its totient is φ = 85052542.

The previous prime is 85052497. The next prime is 85052557. The reversal of 85052543 is 34525058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85052543 - 2⁸ = 85052287 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_4946531 and since 85052543 and 4946531 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85052593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42526271 + 42526272.

It is an arithmetic number, because the mean of its divisors is an integer number (42526272).

Almost surely, 2^85052543 is an apocalyptic number.

85052543 is a deficient number, since it is larger than the sum of its proper divisors (1).

85052543 is an equidigital number, since it uses as much as digits as its factorization.

85052543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 85052543 is about 9222.3935613267. The cubic root of 85052543 is about 439.7735456611.

The spelling of 85052543 in words is "eighty-five million, fifty-two thousand, five hundred forty-three".