800553653 has 2 divisors, whose sum is σ = 800553654. Its totient is φ = 800553652.

The previous prime is 800553629. The next prime is 800553701. The reversal of 800553653 is 356355008.

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., 417098929 + 383454724 = 20423^2 + 19582^2 .

It is a cyclic number.

It is not a de Polignac number, because 800553653 - 2¹² = 800549557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800553253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400276826 + 400276827.

It is an arithmetic number, because the mean of its divisors is an integer number (400276827).

Almost surely, 2^800553653 is an apocalyptic number.

It is an amenable number.

800553653 is a deficient number, since it is larger than the sum of its proper divisors (1).

800553653 is an equidigital number, since it uses as much as digits as its factorization.

800553653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 800553653 is about 28294.0568494516. The cubic root of 800553653 is about 928.5318698042.

The spelling of 800553653 in words is "eight hundred million, five hundred fifty-three thousand, six hundred fifty-three".