86745551 has 2 divisors, whose sum is σ = 86745552. Its totient is φ = 86745550.

The previous prime is 86745521. The next prime is 86745557. The reversal of 86745551 is 15554768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86745551 - 2¹⁰ = 86744527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86745499 and 86745508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86745557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43372775 + 43372776.

It is an arithmetic number, because the mean of its divisors is an integer number (43372776).

Almost surely, 2^86745551 is an apocalyptic number.

86745551 is a deficient number, since it is larger than the sum of its proper divisors (1).

86745551 is an equidigital number, since it uses as much as digits as its factorization.

86745551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168000, while the sum is 41.

The square root of 86745551 is about 9313.7291672026. The cubic root of 86745551 is about 442.6723573409.

The spelling of 86745551 in words is "eighty-six million, seven hundred forty-five thousand, five hundred fifty-one".