Base | Representation |
---|---|
bin | 101001000010… |
… | …0011101011111 |
3 | 1111111000202202 |
4 | 1102010131133 |
5 | 21001422304 |
6 | 2045042115 |
7 | 350603156 |
oct | 122043537 |
9 | 44430682 |
10 | 21514079 |
11 | 11164934 |
12 | 725633b |
13 | 45c3632 |
14 | 2c0059d |
15 | 1d4e81e |
hex | 148475f |
21514079 has 2 divisors, whose sum is σ = 21514080. Its totient is φ = 21514078.
The previous prime is 21514067. The next prime is 21514081. The reversal of 21514079 is 97041512.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-21514079 is a prime.
It is a Sophie Germain prime.
Together with 21514081, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21514019) 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, 10757039 + 10757040.
It is an arithmetic number, because the mean of its divisors is an integer number (10757040).
Almost surely, 221514079 is an apocalyptic number.
21514079 is a deficient number, since it is larger than the sum of its proper divisors (1).
21514079 is an equidigital number, since it uses as much as digits as its factorization.
21514079 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2520, while the sum is 29.
The square root of 21514079 is about 4638.3271769033. The cubic root of 21514079 is about 278.1255708274.
The spelling of 21514079 in words is "twenty-one million, five hundred fourteen thousand, seventy-nine".
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