83445013 has 2 divisors, whose sum is σ = 83445014. Its totient is φ = 83445012.

The previous prime is 83445007. The next prime is 83445031. The reversal of 83445013 is 31054438.

Together with next prime (83445031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83302129 + 142884 = 9127^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 83445013 - 2⁵ = 83444981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83445053) 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, 41722506 + 41722507.

It is an arithmetic number, because the mean of its divisors is an integer number (41722507).

Almost surely, 2^83445013 is an apocalyptic number.

It is an amenable number.

83445013 is a deficient number, since it is larger than the sum of its proper divisors (1).

83445013 is an equidigital number, since it uses as much as digits as its factorization.

83445013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 83445013 is about 9134.8241909738. The cubic root of 83445013 is about 436.9852676184.

It can be divided in two parts, 83 and 445013, that added together give a triangular number (445096 = T₉₄₃).

The spelling of 83445013 in words is "eighty-three million, four hundred forty-five thousand, thirteen".