80162261 has 2 divisors, whose sum is σ = 80162262. Its totient is φ = 80162260.

The previous prime is 80162233. The next prime is 80162267. The reversal of 80162261 is 16226108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77968900 + 2193361 = 8830^2 + 1481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80162261 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80162261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80162267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40081130 + 40081131.

It is an arithmetic number, because the mean of its divisors is an integer number (40081131).

Almost surely, 2^80162261 is an apocalyptic number.

It is an amenable number.

80162261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80162261 is an equidigital number, since it uses as much as digits as its factorization.

80162261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 80162261 is about 8953.3379808874. The cubic root of 80162261 is about 431.1780585447.

Adding to 80162261 its reverse (16226108), we get a palindrome (96388369).

The spelling of 80162261 in words is "eighty million, one hundred sixty-two thousand, two hundred sixty-one".