80261953 has 2 divisors, whose sum is σ = 80261954. Its totient is φ = 80261952.

The previous prime is 80261939. The next prime is 80261977. The reversal of 80261953 is 35916208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78641424 + 1620529 = 8868^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 80261953 - 2⁵ = 80261921 is a prime.

It is not a weakly prime, because it can be changed into another prime (80265953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40130976 + 40130977.

It is an arithmetic number, because the mean of its divisors is an integer number (40130977).

Almost surely, 2^80261953 is an apocalyptic number.

It is an amenable number.

80261953 is a deficient number, since it is larger than the sum of its proper divisors (1).

80261953 is an equidigital number, since it uses as much as digits as its factorization.

80261953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 80261953 is about 8958.9035601462. The cubic root of 80261953 is about 431.3567261441.

The spelling of 80261953 in words is "eighty million, two hundred sixty-one thousand, nine hundred fifty-three".