Search a number
20105333 is a prime number
BaseRepresentation
bin100110010110…
…0100001110101
31101211110022222
41030230201311
520121332313
61554532125
7332615063
oct114544165
941743288
1020105333
1110392486
126897045
13421c361
142955033
151b72208
hex132c875

20105333 has 2 divisors, whose sum is σ = 20105334. Its totient is φ = 20105332.

The previous prime is 20105321. The next prime is 20105341. The reversal of 20105333 is 33350102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 5650129 = 3802^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 20105333 - 24 = 20105317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20105303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052666 + 10052667.

It is an arithmetic number, because the mean of its divisors is an integer number (10052667).

Almost surely, 220105333 is an apocalyptic number.

It is an amenable number.

20105333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105333 is an equidigital number, since it uses as much as digits as its factorization.

20105333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 20105333 is about 4483.8970773201. The cubic root of 20105333 is about 271.9174571118.

Adding to 20105333 its reverse (33350102), we get a palindrome (53455435).

The spelling of 20105333 in words is "twenty million, one hundred five thousand, three hundred thirty-three".