Base | Representation |
---|---|
bin | 110101010010010010… |
… | …010100110111100111 |
3 | 12110200102022202201112 |
4 | 311102102110313213 |
5 | 1414134032020011 |
6 | 42141222215235 |
7 | 4063562262500 |
oct | 652222246747 |
9 | 173612282645 |
10 | 57215110631 |
11 | 222a04904a8 |
12 | b10928451b |
13 | 551a7c0a63 |
14 | 2aaaa83ba7 |
15 | 174d00058b |
hex | d52494de7 |
57215110631 has 24 divisors (see below), whose sum is σ = 70506982656. Its totient is φ = 46133445120.
The previous prime is 57215110607. The next prime is 57215110637. The reversal of 57215110631 is 13601151275.
It is not a de Polignac number, because 57215110631 - 218 = 57214848487 is a prime.
It is a super-2 number, since 2×572151106312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (57215110637) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1742195 + ... + 1774731.
It is an arithmetic number, because the mean of its divisors is an integer number (2937790944).
Almost surely, 257215110631 is an apocalyptic number.
57215110631 is a deficient number, since it is larger than the sum of its proper divisors (13291872025).
57215110631 is a wasteful number, since it uses less digits than its factorization.
57215110631 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34679 (or 34672 counting only the distinct ones).
The product of its (nonzero) digits is 6300, while the sum is 32.
The spelling of 57215110631 in words is "fifty-seven billion, two hundred fifteen million, one hundred ten thousand, six hundred thirty-one".
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