1020853 has 2 divisors, whose sum is σ = 1020854. Its totient is φ = 1020852.

The previous prime is 1020847. The next prime is 1020881. The reversal of 1020853 is 3580201.

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., 877969 + 142884 = 937^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020853 - 2⁵ = 1020821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510426 + 510427.

It is an arithmetic number, because the mean of its divisors is an integer number (510427).

2^1020853 is an apocalyptic number.

It is an amenable number.

1020853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020853 is an equidigital number, since it uses as much as digits as its factorization.

1020853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1020853 is about 1010.3727035109. The cubic root of 1020853 is about 100.6903235680.

The spelling of 1020853 in words is "one million, twenty thousand, eight hundred fifty-three".