83506061 has 2 divisors, whose sum is σ = 83506062. Its totient is φ = 83506060.

The previous prime is 83506037. The next prime is 83506067. The reversal of 83506061 is 16060538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 25060036 = 7645^2 + 5006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83506061 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83506067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41753030 + 41753031.

It is an arithmetic number, because the mean of its divisors is an integer number (41753031).

Almost surely, 2^83506061 is an apocalyptic number.

It is an amenable number.

83506061 is a deficient number, since it is larger than the sum of its proper divisors (1).

83506061 is an equidigital number, since it uses as much as digits as its factorization.

83506061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 83506061 is about 9138.1650783951. The cubic root of 83506061 is about 437.0918071334.

Adding to 83506061 its reverse (16060538), we get a palindrome (99566599).

The spelling of 83506061 in words is "eighty-three million, five hundred six thousand, sixty-one".