20682253 has 2 divisors, whose sum is σ = 20682254. Its totient is φ = 20682252.

The previous prime is 20682247. The next prime is 20682257. The reversal of 20682253 is 35228602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16630084 + 4052169 = 4078^2 + 2013^2 .

It is a cyclic number.

It is not a de Polignac number, because 20682253 - 2¹³ = 20674061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20682257) 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, 10341126 + 10341127.

It is an arithmetic number, because the mean of its divisors is an integer number (10341127).

Almost surely, 2^20682253 is an apocalyptic number.

It is an amenable number.

20682253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20682253 is an equidigital number, since it uses as much as digits as its factorization.

20682253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20682253 is about 4547.7745106810. The cubic root of 20682253 is about 274.4938480356.

The spelling of 20682253 in words is "twenty million, six hundred eighty-two thousand, two hundred fifty-three".