86522549 has 2 divisors, whose sum is σ = 86522550. Its totient is φ = 86522548.

The previous prime is 86522483. The next prime is 86522609. The reversal of 86522549 is 94522568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70442449 + 16080100 = 8393^2 + 4010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86522549 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86527549) 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, 43261274 + 43261275.

It is an arithmetic number, because the mean of its divisors is an integer number (43261275).

Almost surely, 2^86522549 is an apocalyptic number.

It is an amenable number.

86522549 is a deficient number, since it is larger than the sum of its proper divisors (1).

86522549 is an equidigital number, since it uses as much as digits as its factorization.

86522549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 86522549 is about 9301.7497816271. The cubic root of 86522549 is about 442.2926970074.

The spelling of 86522549 in words is "eighty-six million, five hundred twenty-two thousand, five hundred forty-nine".