85471651 has 2 divisors, whose sum is σ = 85471652. Its totient is φ = 85471650.

The previous prime is 85471649. The next prime is 85471679. The reversal of 85471651 is 15617458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85471651 - 2¹ = 85471649 is a prime.

Together with 85471649, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85471651.

It is not a weakly prime, because it can be changed into another prime (85471621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42735825 + 42735826.

It is an arithmetic number, because the mean of its divisors is an integer number (42735826).

Almost surely, 2^85471651 is an apocalyptic number.

85471651 is a deficient number, since it is larger than the sum of its proper divisors (1).

85471651 is an equidigital number, since it uses as much as digits as its factorization.

85471651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 37.

The square root of 85471651 is about 9245.0879390085. The cubic root of 85471651 is about 440.4947104411.

The spelling of 85471651 in words is "eighty-five million, four hundred seventy-one thousand, six hundred fifty-one".