Base | Representation |
---|---|
bin | 1001100100100… |
… | …0111101101111 |
3 | 2210112120020122 |
4 | 2121020331233 |
5 | 40234113001 |
6 | 3552235155 |
7 | 665140043 |
oct | 231107557 |
9 | 83476218 |
10 | 40144751 |
11 | 2072a389 |
12 | 1153babb |
13 | 84176ba |
14 | 5490023 |
15 | 37ceb1b |
hex | 2648f6f |
40144751 has 2 divisors, whose sum is σ = 40144752. Its totient is φ = 40144750.
The previous prime is 40144717. The next prime is 40144759. The reversal of 40144751 is 15744104.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 40144751 - 218 = 39882607 is a prime.
It is a super-2 number, since 2×401447512 = 3223202065704002, which contains 22 as substring.
It is equal to p2441942 and since 40144751 and 2441942 have the same sum of digits, it is a Honaker prime.
It is a self number, because there is not a number n which added to its sum of digits gives 40144751.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (40144759) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072375 + 20072376.
It is an arithmetic number, because the mean of its divisors is an integer number (20072376).
Almost surely, 240144751 is an apocalyptic number.
40144751 is a deficient number, since it is larger than the sum of its proper divisors (1).
40144751 is an equidigital number, since it uses as much as digits as its factorization.
40144751 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2240, while the sum is 26.
The square root of 40144751 is about 6335.9885574392. The cubic root of 40144751 is about 342.4072272572.
Adding to 40144751 its reverse (15744104), we get a palindrome (55888855).
The spelling of 40144751 in words is "forty million, one hundred forty-four thousand, seven hundred fifty-one".
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