Base | Representation |
---|---|
bin | 1010011111001… |
… | …11100100111111 |
3 | 20010112212100112 |
4 | 11033213210333 |
5 | 140010332401 |
6 | 12421420235 |
7 | 2115551324 |
oct | 517474477 |
9 | 203485315 |
10 | 87980351 |
11 | 45731a38 |
12 | 2556a67b |
13 | 152c58a4 |
14 | b982b4b |
15 | 7acd3bb |
hex | 53e793f |
87980351 has 2 divisors, whose sum is σ = 87980352. Its totient is φ = 87980350.
The previous prime is 87980341. The next prime is 87980353. The reversal of 87980351 is 15308978.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 87980351 - 210 = 87979327 is a prime.
Together with 87980353, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 87980299 and 87980308.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (87980353) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990175 + 43990176.
It is an arithmetic number, because the mean of its divisors is an integer number (43990176).
Almost surely, 287980351 is an apocalyptic number.
87980351 is a deficient number, since it is larger than the sum of its proper divisors (1).
87980351 is an equidigital number, since it uses as much as digits as its factorization.
87980351 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 60480, while the sum is 41.
The square root of 87980351 is about 9379.7841659603. The cubic root of 87980351 is about 444.7629103581.
The spelling of 87980351 in words is "eighty-seven million, nine hundred eighty thousand, three hundred fifty-one".
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