Base | Representation |
---|---|
bin | 10010001000110… |
… | …00110100111111 |
3 | 101121021202222222 |
4 | 21010120310333 |
5 | 302422121330 |
6 | 23032555555 |
7 | 3525133025 |
oct | 1104306477 |
9 | 347252888 |
10 | 152145215 |
11 | 78977a52 |
12 | 42b52bbb |
13 | 256a0471 |
14 | 162c6715 |
15 | d5550e5 |
hex | 9118d3f |
152145215 has 4 divisors (see below), whose sum is σ = 182574264. Its totient is φ = 121716168.
The previous prime is 152145197. The next prime is 152145239. The reversal of 152145215 is 512541251.
152145215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512541251 = 47 ⋅10905133.
It is a cyclic number.
It is not a de Polignac number, because 152145215 - 26 = 152145151 is a prime.
It is a Duffinian number.
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, 15214517 + ... + 15214526.
It is an arithmetic number, because the mean of its divisors is an integer number (45643566).
Almost surely, 2152145215 is an apocalyptic number.
152145215 is a deficient number, since it is larger than the sum of its proper divisors (30429049).
152145215 is an equidigital number, since it uses as much as digits as its factorization.
152145215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30429048.
The product of its digits is 2000, while the sum is 26.
The square root of 152145215 is about 12334.7158459366. The cubic root of 152145215 is about 533.8502282587.
Adding to 152145215 its reverse (512541251), we get a palindrome (664686466).
The spelling of 152145215 in words is "one hundred fifty-two million, one hundred forty-five thousand, two hundred fifteen".
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