80200261 has 2 divisors, whose sum is σ = 80200262. Its totient is φ = 80200260.

The previous prime is 80200249. The next prime is 80200297. The reversal of 80200261 is 16200208.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 5377761 = 8650^2 + 2319^2 .

It is a cyclic number.

It is not a de Polignac number, because 80200261 - 2¹¹ = 80198213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80200061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40100130 + 40100131.

It is an arithmetic number, because the mean of its divisors is an integer number (40100131).

Almost surely, 2^80200261 is an apocalyptic number.

It is an amenable number.

80200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80200261 is an equidigital number, since it uses as much as digits as its factorization.

80200261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 80200261 is about 8955.4598430231. The cubic root of 80200261 is about 431.2461794523.

Adding to 80200261 its reverse (16200208), we get a palindrome (96400469).

The spelling of 80200261 in words is "eighty million, two hundred thousand, two hundred sixty-one".