Base | Representation |
---|---|
bin | 101010010111000010101 |
3 | 2121112001101 |
4 | 11102320111 |
5 | 323404203 |
6 | 45430101 |
7 | 14540542 |
oct | 5227025 |
9 | 2545041 |
10 | 1388053 |
11 | 868957 |
12 | 56b331 |
13 | 397a44 |
14 | 281bc9 |
15 | 1c641d |
hex | 152e15 |
1388053 has 2 divisors, whose sum is σ = 1388054. Its totient is φ = 1388052.
The previous prime is 1388041. The next prime is 1388059. The reversal of 1388053 is 3508831.
1388053 is nontrivially palindromic in base 4.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1340964 + 47089 = 1158^2 + 217^2 .
It is an emirp because it is prime and its reverse (3508831) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1388053 - 25 = 1388021 is a prime.
It is a super-2 number, since 2×13880532 = 3853382261618, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1388059) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694026 + 694027.
It is an arithmetic number, because the mean of its divisors is an integer number (694027).
21388053 is an apocalyptic number.
It is an amenable number.
1388053 is a deficient number, since it is larger than the sum of its proper divisors (1).
1388053 is an equidigital number, since it uses as much as digits as its factorization.
1388053 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2880, while the sum is 28.
The square root of 1388053 is about 1178.1566109817. The cubic root of 1388053 is about 111.5497709926.
The spelling of 1388053 in words is "one million, three hundred eighty-eight thousand, fifty-three".
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