85757471 has 2 divisors, whose sum is σ = 85757472. Its totient is φ = 85757470.

The previous prime is 85757461. The next prime is 85757473. The reversal of 85757471 is 17475758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85757471 - 2¹⁸ = 85495327 is a prime.

It is a super-3 number, since 3×85757471³ (a number of 25 digits) contains 333 as substring.

Together with 85757473, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4985189 and since 85757471 and 4985189 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 (85757473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42878735 + 42878736.

It is an arithmetic number, because the mean of its divisors is an integer number (42878736).

Almost surely, 2^85757471 is an apocalyptic number.

85757471 is a deficient number, since it is larger than the sum of its proper divisors (1).

85757471 is an equidigital number, since it uses as much as digits as its factorization.

85757471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274400, while the sum is 44.

The square root of 85757471 is about 9260.5329760225. The cubic root of 85757471 is about 440.9851737174.

The spelling of 85757471 in words is "eighty-five million, seven hundred fifty-seven thousand, four hundred seventy-one".