80801953 has 2 divisors, whose sum is σ = 80801954. Its totient is φ = 80801952.

The previous prime is 80801947. The next prime is 80801971. The reversal of 80801953 is 35910808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 31899904 = 6993^2 + 5648^2 .

It is a cyclic number.

It is not a de Polignac number, because 80801953 - 2¹³ = 80793761 is a prime.

It is a super-2 number, since 2×80801953² = 13057911217228418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80801353) 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, 40400976 + 40400977.

It is an arithmetic number, because the mean of its divisors is an integer number (40400977).

Almost surely, 2^80801953 is an apocalyptic number.

It is an amenable number.

80801953 is a deficient number, since it is larger than the sum of its proper divisors (1).

80801953 is an equidigital number, since it uses as much as digits as its factorization.

80801953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 80801953 is about 8988.9906552404. The cubic root of 80801953 is about 432.3219497209.

The spelling of 80801953 in words is "eighty million, eight hundred one thousand, nine hundred fifty-three".