83180077 has 2 divisors, whose sum is σ = 83180078. Its totient is φ = 83180076.

The previous prime is 83180051. The next prime is 83180089. The reversal of 83180077 is 77008138.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 35652841 = 6894^2 + 5971^2 .

It is a cyclic number.

It is not a de Polignac number, because 83180077 - 2¹⁹ = 82655789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41590038 + 41590039.

It is an arithmetic number, because the mean of its divisors is an integer number (41590039).

Almost surely, 2^83180077 is an apocalyptic number.

It is an amenable number.

83180077 is a deficient number, since it is larger than the sum of its proper divisors (1).

83180077 is an equidigital number, since it uses as much as digits as its factorization.

83180077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 83180077 is about 9120.3112337244. The cubic root of 83180077 is about 436.5223045766.

It can be divided in two parts, 831 and 80077, that added together give a palindrome (80908).

The spelling of 83180077 in words is "eighty-three million, one hundred eighty thousand, seventy-seven".