83447057 has 2 divisors, whose sum is σ = 83447058. Its totient is φ = 83447056.

The previous prime is 83447051. The next prime is 83447153. The reversal of 83447057 is 75074438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46771921 + 36675136 = 6839^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 83447057 - 2⁴ = 83447041 is a prime.

It is a super-2 number, since 2×83447057² = 13926822643922498, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83447057.

It is not a weakly prime, because it can be changed into another prime (83447051) 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, 41723528 + 41723529.

It is an arithmetic number, because the mean of its divisors is an integer number (41723529).

Almost surely, 2^83447057 is an apocalyptic number.

It is an amenable number.

83447057 is a deficient number, since it is larger than the sum of its proper divisors (1).

83447057 is an equidigital number, since it uses as much as digits as its factorization.

83447057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 83447057 is about 9134.9360698365. The cubic root of 83447057 is about 436.9888355991.

The spelling of 83447057 in words is "eighty-three million, four hundred forty-seven thousand, fifty-seven".