20100853 has 2 divisors, whose sum is σ = 20100854. Its totient is φ = 20100852.

The previous prime is 20100811. The next prime is 20100877. The reversal of 20100853 is 35800102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16630084 + 3470769 = 4078^2 + 1863^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100853 - 2²¹ = 18003701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20100853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050426 + 10050427.

It is an arithmetic number, because the mean of its divisors is an integer number (10050427).

Almost surely, 2^20100853 is an apocalyptic number.

It is an amenable number.

20100853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100853 is an equidigital number, since it uses as much as digits as its factorization.

20100853 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 20100853 is about 4483.3974840516. The cubic root of 20100853 is about 271.8972588109.

Adding to 20100853 its reverse (35800102), we get a palindrome (55900955).

The spelling of 20100853 in words is "twenty million, one hundred thousand, eight hundred fifty-three".