Base | Representation |
---|---|
bin | 1001111110111… |
… | …11011000100001 |
3 | 12211121001210202 |
4 | 10333133120201 |
5 | 132420034411 |
6 | 12151034545 |
7 | 2034612221 |
oct | 477373041 |
9 | 184531722 |
10 | 83752481 |
11 | 4330452a |
12 | 2406ba55 |
13 | 144753a7 |
14 | b1a2081 |
15 | 754583b |
hex | 4fdf621 |
83752481 has 4 divisors (see below), whose sum is σ = 83778864. Its totient is φ = 83726100.
The previous prime is 83752469. The next prime is 83752507. The reversal of 83752481 is 18425738.
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, and also an emirpimes, since its reverse is a distinct semiprime: 18425738 = 2 ⋅9212869.
It is a cyclic number.
It is not a de Polignac number, because 83752481 - 210 = 83751457 is a prime.
It is a super-2 number, since 2×837524812 = 14028956147310722, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (83752411) 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, 7655 + ... + 15036.
It is an arithmetic number, because the mean of its divisors is an integer number (20944716).
Almost surely, 283752481 is an apocalyptic number.
It is an amenable number.
83752481 is a deficient number, since it is larger than the sum of its proper divisors (26383).
83752481 is a wasteful number, since it uses less digits than its factorization.
83752481 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26382.
The product of its digits is 53760, while the sum is 38.
The square root of 83752481 is about 9151.6381593680. The cubic root of 83752481 is about 437.5213264162.
The spelling of 83752481 in words is "eighty-three million, seven hundred fifty-two thousand, four hundred eighty-one".
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