20683151 has 2 divisors, whose sum is σ = 20683152. Its totient is φ = 20683150.

The previous prime is 20683139. The next prime is 20683171. The reversal of 20683151 is 15138602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20683151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20683151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20683171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341575 + 10341576.

It is an arithmetic number, because the mean of its divisors is an integer number (10341576).

Almost surely, 2^20683151 is an apocalyptic number.

20683151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20683151 is an equidigital number, since it uses as much as digits as its factorization.

20683151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20683151 is about 4547.8732392185. The cubic root of 20683151 is about 274.4978207154.

The spelling of 20683151 in words is "twenty million, six hundred eighty-three thousand, one hundred fifty-one".