86132561 has 2 divisors, whose sum is σ = 86132562. Its totient is φ = 86132560.

The previous prime is 86132533. The next prime is 86132593. The reversal of 86132561 is 16523168.

It is a happy number.

It is an a-pointer prime, because the next prime (86132593) can be obtained adding 86132561 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86118400 + 14161 = 9280^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 86132561 - 2²² = 81938257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86132531) 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, 43066280 + 43066281.

It is an arithmetic number, because the mean of its divisors is an integer number (43066281).

Almost surely, 2^86132561 is an apocalyptic number.

It is an amenable number.

86132561 is a deficient number, since it is larger than the sum of its proper divisors (1).

86132561 is an equidigital number, since it uses as much as digits as its factorization.

86132561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 86132561 is about 9280.7629535507. The cubic root of 86132561 is about 441.6271724188.

The spelling of 86132561 in words is "eighty-six million, one hundred thirty-two thousand, five hundred sixty-one".