Base | Representation |
---|---|
bin | 10010001000100… |
… | …01100000101101 |
3 | 101121020020212222 |
4 | 21010101200231 |
5 | 302420141440 |
6 | 23032205125 |
7 | 3524646452 |
oct | 1104214055 |
9 | 347206788 |
10 | 152115245 |
11 | 78957487 |
12 | 42b397a5 |
13 | 2568c929 |
14 | 162b9829 |
15 | d54b2b5 |
hex | 911182d |
152115245 has 4 divisors (see below), whose sum is σ = 182538300. Its totient is φ = 121692192.
The previous prime is 152115239. The next prime is 152115263. The reversal of 152115245 is 542511251.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542511251 = 347 ⋅1563433.
It can be written as a sum of positive squares in 2 ways, for example, as 109956196 + 42159049 = 10486^2 + 6493^2 .
It is a cyclic number.
It is not a de Polignac number, because 152115245 - 26 = 152115181 is a prime.
It is a super-2 number, since 2×1521152452 = 46278095522820050, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15211520 + ... + 15211529.
It is an arithmetic number, because the mean of its divisors is an integer number (45634575).
Almost surely, 2152115245 is an apocalyptic number.
It is an amenable number.
152115245 is a deficient number, since it is larger than the sum of its proper divisors (30423055).
152115245 is an equidigital number, since it uses as much as digits as its factorization.
152115245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30423054.
The product of its digits is 2000, while the sum is 26.
The square root of 152115245 is about 12333.5009222848. The cubic root of 152115245 is about 533.8151728414.
Adding to 152115245 its reverse (542511251), we get a palindrome (694626496).
The spelling of 152115245 in words is "one hundred fifty-two million, one hundred fifteen thousand, two hundred forty-five".
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