Base | Representation |
---|---|
bin | 1101100110100… |
… | …0010111010101 |
3 | 10222100110200111 |
4 | 3121220113111 |
5 | 104101104311 |
6 | 5354443021 |
7 | 1261631140 |
oct | 331502725 |
9 | 128313614 |
10 | 57050581 |
11 | 2a226a45 |
12 | 17133471 |
13 | ba86653 |
14 | 7811057 |
15 | 501dd21 |
hex | 36685d5 |
57050581 has 16 divisors (see below), whose sum is σ = 66977280. Its totient is φ = 47585520.
The previous prime is 57050579. The next prime is 57050593. The reversal of 57050581 is 18505075.
It is a cyclic number.
It is not a de Polignac number, because 57050581 - 21 = 57050579 is a prime.
It is a super-2 number, since 2×570505812 = 6509537584875122, which contains 22 as substring.
It is a Duffinian number.
It is a nialpdrome in base 13.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (57050501) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43546 + ... + 44836.
It is an arithmetic number, because the mean of its divisors is an integer number (4186080).
Almost surely, 257050581 is an apocalyptic number.
It is an amenable number.
57050581 is a deficient number, since it is larger than the sum of its proper divisors (9926699).
57050581 is a wasteful number, since it uses less digits than its factorization.
57050581 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1464.
The product of its (nonzero) digits is 7000, while the sum is 31.
The square root of 57050581 is about 7553.1835010147. The cubic root of 57050581 is about 384.9639163349.
The spelling of 57050581 in words is "fifty-seven million, fifty thousand, five hundred eighty-one".
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