83551361 has 2 divisors, whose sum is σ = 83551362. Its totient is φ = 83551360.

The previous prime is 83551357. The next prime is 83551381. The reversal of 83551361 is 16315538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 25563136 = 7615^2 + 5056^2 .

It is a cyclic number.

It is not a de Polignac number, because 83551361 - 2² = 83551357 is a prime.

It is not a weakly prime, because it can be changed into another prime (83551381) 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, 41775680 + 41775681.

It is an arithmetic number, because the mean of its divisors is an integer number (41775681).

Almost surely, 2^83551361 is an apocalyptic number.

It is an amenable number.

83551361 is a deficient number, since it is larger than the sum of its proper divisors (1).

83551361 is an equidigital number, since it uses as much as digits as its factorization.

83551361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 83551361 is about 9140.6433581012. The cubic root of 83551361 is about 437.1708300583.

Adding to 83551361 its reverse (16315538), we get a palindrome (99866899).

The spelling of 83551361 in words is "eighty-three million, five hundred fifty-one thousand, three hundred sixty-one".