Base | Representation |
---|---|
bin | 111110111001010… |
… | …010001101111101 |
3 | 2201112112221001211 |
4 | 332321102031331 |
5 | 4130113013341 |
6 | 252412404421 |
7 | 35102042101 |
oct | 7671221575 |
9 | 2645487054 |
10 | 1055204221 |
11 | 4a16a9605 |
12 | 255476711 |
13 | 13a7c82c6 |
14 | a01db901 |
15 | 62988181 |
hex | 3ee5237d |
1055204221 has 8 divisors (see below), whose sum is σ = 1087949880. Its totient is φ = 1022681088.
The previous prime is 1055204177. The next prime is 1055204231. The reversal of 1055204221 is 1224025501.
It can be written as a sum of positive squares in 4 ways, for example, as 483516121 + 571688100 = 21989^2 + 23910^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1055204221 - 213 = 1055196029 is a prime.
It is a super-2 number, since 2×10552042212 = 2226911896032433682, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1055204192 and 1055204201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1055204231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45976 + ... + 64993.
It is an arithmetic number, because the mean of its divisors is an integer number (135993735).
Almost surely, 21055204221 is an apocalyptic number.
It is an amenable number.
1055204221 is a deficient number, since it is larger than the sum of its proper divisors (32745659).
1055204221 is a wasteful number, since it uses less digits than its factorization.
1055204221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 111263.
The product of its (nonzero) digits is 800, while the sum is 22.
The square root of 1055204221 is about 32483.9071079819. The cubic root of 1055204221 is about 1018.0728127523.
Adding to 1055204221 its reverse (1224025501), we get a palindrome (2279229722).
The spelling of 1055204221 in words is "one billion, fifty-five million, two hundred four thousand, two hundred twenty-one".
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