Base | Representation |
---|---|
bin | 10010001110111… |
… | …11000000110101 |
3 | 101122211000112101 |
4 | 21013133000311 |
5 | 303124110411 |
6 | 23102222101 |
7 | 3535053502 |
oct | 1107370065 |
9 | 348730471 |
10 | 152956981 |
11 | 79381931 |
12 | 43284931 |
13 | 258c5ab8 |
14 | 164584a9 |
15 | d6658c1 |
hex | 91df035 |
152956981 has 2 divisors, whose sum is σ = 152956982. Its totient is φ = 152956980.
The previous prime is 152956967. The next prime is 152956997. The reversal of 152956981 is 189659251.
152956981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 78411025 + 74545956 = 8855^2 + 8634^2 .
It is an emirp because it is prime and its reverse (189659251) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 152956981 - 25 = 152956949 is a prime.
It is a super-2 number, since 2×1529569812 = 46791676073268722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (152956901) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76478490 + 76478491.
It is an arithmetic number, because the mean of its divisors is an integer number (76478491).
Almost surely, 2152956981 is an apocalyptic number.
It is an amenable number.
152956981 is a deficient number, since it is larger than the sum of its proper divisors (1).
152956981 is an equidigital number, since it uses as much as digits as its factorization.
152956981 is an evil number, because the sum of its binary digits is even.
The product of its digits is 194400, while the sum is 46.
The square root of 152956981 is about 12367.5778145925. The cubic root of 152956981 is about 534.7979916877.
The spelling of 152956981 in words is "one hundred fifty-two million, nine hundred fifty-six thousand, nine hundred eighty-one".
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