Base | Representation |
---|---|
bin | 1101001100001… |
… | …0010110001001 |
3 | 10212002122111201 |
4 | 3103002112021 |
5 | 103130300433 |
6 | 5253424201 |
7 | 1241141416 |
oct | 323022611 |
9 | 125078451 |
10 | 55321993 |
11 | 29256261 |
12 | 1663b061 |
13 | b5cc90c |
14 | 74c110d |
15 | 4ccba7d |
hex | 34c2589 |
55321993 has 8 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 53066160.
The previous prime is 55321991. The next prime is 55322009. The reversal of 55321993 is 39912355.
It is the 3037-th star number.
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 55321993 - 21 = 55321991 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (37).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (55321991) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7903 + ... + 13156.
It is an arithmetic number, because the mean of its divisors is an integer number (7202520).
Almost surely, 255321993 is an apocalyptic number.
It is an amenable number.
55321993 is a deficient number, since it is larger than the sum of its proper divisors (2298167).
55321993 is a wasteful number, since it uses less digits than its factorization.
55321993 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21167.
The product of its digits is 36450, while the sum is 37.
The square root of 55321993 is about 7437.8755703494. The cubic root of 55321993 is about 381.0359383115.
The spelling of 55321993 in words is "fifty-five million, three hundred twenty-one thousand, nine hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •