83287081 has 2 divisors, whose sum is σ = 83287082. Its totient is φ = 83287080.

The previous prime is 83287079. The next prime is 83287091. The reversal of 83287081 is 18078238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50694400 + 32592681 = 7120^2 + 5709^2 .

It is a cyclic number.

It is not a de Polignac number, because 83287081 - 2¹ = 83287079 is a prime.

It is a super-2 number, since 2×83287081² = 13873475723001122, which contains 22 as substring.

Together with 83287079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 83287081.

It is not a weakly prime, because it can be changed into another prime (83287091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41643540 + 41643541.

It is an arithmetic number, because the mean of its divisors is an integer number (41643541).

Almost surely, 2^83287081 is an apocalyptic number.

It is an amenable number.

83287081 is a deficient number, since it is larger than the sum of its proper divisors (1).

83287081 is an equidigital number, since it uses as much as digits as its factorization.

83287081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 83287081 is about 9126.1755955055. The cubic root of 83287081 is about 436.7094071432.

The spelling of 83287081 in words is "eighty-three million, two hundred eighty-seven thousand, eighty-one".