Base | Representation |
---|---|
bin | 1100111010101… |
… | …1110001101001 |
3 | 10202221200022120 |
4 | 3032223301221 |
5 | 102332242334 |
6 | 5213141453 |
7 | 1225350003 |
oct | 316536151 |
9 | 122850276 |
10 | 54180969 |
11 | 28646a67 |
12 | 1618a889 |
13 | b2c045b |
14 | 72a5373 |
15 | 4b53949 |
hex | 33abc69 |
54180969 has 4 divisors (see below), whose sum is σ = 72241296. Its totient is φ = 36120644.
The previous prime is 54180947. The next prime is 54180977. The reversal of 54180969 is 96908145.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 54180969 - 25 = 54180937 is a prime.
It is a super-2 number, since 2×541809692 = 5871154803557922, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 54180969.
It is not an unprimeable number, because it can be changed into a prime (54180769) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9030159 + ... + 9030164.
It is an arithmetic number, because the mean of its divisors is an integer number (18060324).
Almost surely, 254180969 is an apocalyptic number.
It is an amenable number.
54180969 is a deficient number, since it is larger than the sum of its proper divisors (18060327).
54180969 is a wasteful number, since it uses less digits than its factorization.
54180969 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18060326.
The product of its (nonzero) digits is 77760, while the sum is 42.
The square root of 54180969 is about 7360.7723100229. The cubic root of 54180969 is about 378.3980787112.
The spelling of 54180969 in words is "fifty-four million, one hundred eighty thousand, nine hundred sixty-nine".
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