83384557 has 2 divisors, whose sum is σ = 83384558. Its totient is φ = 83384556.

The previous prime is 83384549. The next prime is 83384593. The reversal of 83384557 is 75548338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76143076 + 7241481 = 8726^2 + 2691^2 .

It is a cyclic number.

It is not a de Polignac number, because 83384557 - 2³ = 83384549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83334557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41692278 + 41692279.

It is an arithmetic number, because the mean of its divisors is an integer number (41692279).

Almost surely, 2^83384557 is an apocalyptic number.

It is an amenable number.

83384557 is a deficient number, since it is larger than the sum of its proper divisors (1).

83384557 is an equidigital number, since it uses as much as digits as its factorization.

83384557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 43.

The square root of 83384557 is about 9131.5144965115. The cubic root of 83384557 is about 436.8797100262.

The spelling of 83384557 in words is "eighty-three million, three hundred eighty-four thousand, five hundred fifty-seven".