86522971 has 2 divisors, whose sum is σ = 86522972. Its totient is φ = 86522970.

The previous prime is 86522957. The next prime is 86522981. The reversal of 86522971 is 17922568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86522971 - 2⁵ = 86522939 is a prime.

It is not a weakly prime, because it can be changed into another prime (86522951) 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, 43261485 + 43261486.

It is an arithmetic number, because the mean of its divisors is an integer number (43261486).

Almost surely, 2^86522971 is an apocalyptic number.

86522971 is a deficient number, since it is larger than the sum of its proper divisors (1).

86522971 is an equidigital number, since it uses as much as digits as its factorization.

86522971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 86522971 is about 9301.7724655036. The cubic root of 86522971 is about 442.2934160770.

The spelling of 86522971 in words is "eighty-six million, five hundred twenty-two thousand, nine hundred seventy-one".