84755513 has 2 divisors, whose sum is σ = 84755514. Its totient is φ = 84755512.

The previous prime is 84755497. The next prime is 84755543. The reversal of 84755513 is 31555748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65157184 + 19598329 = 8072^2 + 4427^2 .

It is a cyclic number.

It is not a de Polignac number, because 84755513 - 2⁴ = 84755497 is a prime.

It is not a weakly prime, because it can be changed into another prime (84755543) 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, 42377756 + 42377757.

It is an arithmetic number, because the mean of its divisors is an integer number (42377757).

Almost surely, 2^84755513 is an apocalyptic number.

It is an amenable number.

84755513 is a deficient number, since it is larger than the sum of its proper divisors (1).

84755513 is an equidigital number, since it uses as much as digits as its factorization.

84755513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The square root of 84755513 is about 9206.2757399504. The cubic root of 84755513 is about 439.2610064332.

The spelling of 84755513 in words is "eighty-four million, seven hundred fifty-five thousand, five hundred thirteen".