Base | Representation |
---|---|
bin | 1010100010100… |
… | …11011101001101 |
3 | 20011101022111002 |
4 | 11101103131031 |
5 | 140114002341 |
6 | 12435110045 |
7 | 2122401506 |
oct | 521233515 |
9 | 204338432 |
10 | 88422221 |
11 | 45a03a18 |
12 | 25742325 |
13 | 1541ba54 |
14 | ba59bad |
15 | 7b6929b |
hex | 545374d |
88422221 has 2 divisors, whose sum is σ = 88422222. Its totient is φ = 88422220.
The previous prime is 88422197. The next prime is 88422223. The reversal of 88422221 is 12222488.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 63282025 + 25140196 = 7955^2 + 5014^2 .
It is a cyclic number.
It is not a de Polignac number, because 88422221 - 26 = 88422157 is a prime.
It is a Sophie Germain prime.
Together with 88422223, it forms a pair of twin primes.
It is a Chen prime.
It is a Curzon number.
It is a nialpdrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (88422223) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44211110 + 44211111.
It is an arithmetic number, because the mean of its divisors is an integer number (44211111).
Almost surely, 288422221 is an apocalyptic number.
It is an amenable number.
88422221 is a deficient number, since it is larger than the sum of its proper divisors (1).
88422221 is an equidigital number, since it uses as much as digits as its factorization.
88422221 is an evil number, because the sum of its binary digits is even.
The product of its digits is 4096, while the sum is 29.
The square root of 88422221 is about 9403.3090452245. The cubic root of 88422221 is about 445.5062554677.
The spelling of 88422221 in words is "eighty-eight million, four hundred twenty-two thousand, two hundred twenty-one".
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