85702543 has 2 divisors, whose sum is σ = 85702544. Its totient is φ = 85702542.

The previous prime is 85702541. The next prime is 85702567. The reversal of 85702543 is 34520758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85702543 - 2¹ = 85702541 is a prime.

Together with 85702541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 85702499 and 85702508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85702541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42851271 + 42851272.

It is an arithmetic number, because the mean of its divisors is an integer number (42851272).

Almost surely, 2^85702543 is an apocalyptic number.

85702543 is a deficient number, since it is larger than the sum of its proper divisors (1).

85702543 is an equidigital number, since it uses as much as digits as its factorization.

85702543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 85702543 is about 9257.5667969505. The cubic root of 85702543 is about 440.8910026918.

The spelling of 85702543 in words is "eighty-five million, seven hundred two thousand, five hundred forty-three".