20953363 has 2 divisors, whose sum is σ = 20953364. Its totient is φ = 20953362.

The previous prime is 20953351. The next prime is 20953381. The reversal of 20953363 is 36335902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20953363 is a prime.

It is not a weakly prime, because it can be changed into another prime (20953313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10476681 + 10476682.

It is an arithmetic number, because the mean of its divisors is an integer number (10476682).

Almost surely, 2^20953363 is an apocalyptic number.

20953363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20953363 is an equidigital number, since it uses as much as digits as its factorization.

20953363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 31.

The square root of 20953363 is about 4577.4843527859. The cubic root of 20953363 is about 275.6880314262.

It can be divided in two parts, 20953 and 363, that added together give a square (21316 = 146²).

The spelling of 20953363 in words is "twenty million, nine hundred fifty-three thousand, three hundred sixty-three".