86544533 has 2 divisors, whose sum is σ = 86544534. Its totient is φ = 86544532.

The previous prime is 86544511. The next prime is 86544539. The reversal of 86544533 is 33544568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85414564 + 1129969 = 9242^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 86544533 - 2¹⁸ = 86282389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86544539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43272266 + 43272267.

It is an arithmetic number, because the mean of its divisors is an integer number (43272267).

Almost surely, 2^86544533 is an apocalyptic number.

It is an amenable number.

86544533 is a deficient number, since it is larger than the sum of its proper divisors (1).

86544533 is an equidigital number, since it uses as much as digits as its factorization.

86544533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 86544533 is about 9302.9314197193. The cubic root of 86544533 is about 442.3301536757.

The spelling of 86544533 in words is "eighty-six million, five hundred forty-four thousand, five hundred thirty-three".