86532857 has 2 divisors, whose sum is σ = 86532858. Its totient is φ = 86532856.

The previous prime is 86532833. The next prime is 86532863. The reversal of 86532857 is 75823568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49857721 + 36675136 = 7061^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 86532857 - 2¹⁸ = 86270713 is a prime.

It is not a weakly prime, because it can be changed into another prime (86532557) 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, 43266428 + 43266429.

It is an arithmetic number, because the mean of its divisors is an integer number (43266429).

Almost surely, 2^86532857 is an apocalyptic number.

It is an amenable number.

86532857 is a deficient number, since it is larger than the sum of its proper divisors (1).

86532857 is an equidigital number, since it uses as much as digits as its factorization.

86532857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 44.

The square root of 86532857 is about 9302.3038544223. The cubic root of 86532857 is about 442.3102607220.

The spelling of 86532857 in words is "eighty-six million, five hundred thirty-two thousand, eight hundred fifty-seven".