Base | Representation |
---|---|
bin | 1110100111011… |
… | …1000011110001 |
3 | 11021100121202021 |
4 | 3221313003301 |
5 | 111143230243 |
6 | 10025551441 |
7 | 1343040664 |
oct | 351670361 |
9 | 137317667 |
10 | 61305073 |
11 | 31672455 |
12 | 18645581 |
13 | c915cbb |
14 | 81db6db |
15 | 55ae6ed |
hex | 3a770f1 |
61305073 has 6 divisors (see below), whose sum is σ = 63347442. Its totient is φ = 59326560.
The previous prime is 61305029. The next prime is 61305089. The reversal of 61305073 is 37050316.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 61027344 + 277729 = 7812^2 + 527^2 .
It is a de Polignac number, because none of the positive numbers 2k-61305073 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (61305973) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30936 + ... + 32857.
It is an arithmetic number, because the mean of its divisors is an integer number (10557907).
Almost surely, 261305073 is an apocalyptic number.
It is an amenable number.
61305073 is a deficient number, since it is larger than the sum of its proper divisors (2042369).
61305073 is an equidigital number, since it uses as much as digits as its factorization.
61305073 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 63855 (or 63824 counting only the distinct ones).
The product of its (nonzero) digits is 1890, while the sum is 25.
The square root of 61305073 is about 7829.7556155987. The cubic root of 61305073 is about 394.3048672383.
Adding to 61305073 its reverse (37050316), we get a palindrome (98355389).
The spelling of 61305073 in words is "sixty-one million, three hundred five thousand, seventy-three".
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