83057813 has 2 divisors, whose sum is σ = 83057814. Its totient is φ = 83057812.

The previous prime is 83057803. The next prime is 83057831. The reversal of 83057813 is 31875038.

Together with next prime (83057831) 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., 80964004 + 2093809 = 8998^2 + 1447^2 .

It is a cyclic number.

It is not a de Polignac number, because 83057813 - 2¹⁰ = 83056789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83057803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41528906 + 41528907.

It is an arithmetic number, because the mean of its divisors is an integer number (41528907).

Almost surely, 2^83057813 is an apocalyptic number.

It is an amenable number.

83057813 is a deficient number, since it is larger than the sum of its proper divisors (1).

83057813 is an equidigital number, since it uses as much as digits as its factorization.

83057813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 83057813 is about 9113.6059274033. The cubic root of 83057813 is about 436.3083225118.

The spelling of 83057813 in words is "eighty-three million, fifty-seven thousand, eight hundred thirteen".