Search a number
-
+
250575131 is a prime number
BaseRepresentation
bin11101110111101…
…11100100011011
3122110111112110102
432323313210123
51003121401011
640510410015
76131565512
oct1673674433
9573445412
10250575131
11119496894
126bb0090b
133cbb4411
14253c9679
1516ee973b
hexeef791b

250575131 has 2 divisors, whose sum is σ = 250575132. Its totient is φ = 250575130.

The previous prime is 250575113. The next prime is 250575163. The reversal of 250575131 is 131575052.

It is a happy number.

Together with previous prime (250575113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-250575131 is a prime.

It is a super-2 number, since 2×2505751312 = 125575792551334322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 250575094 and 250575103.

It is not a weakly prime, because it can be changed into another prime (250575331) 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 as a sum of consecutive naturals, namely, 125287565 + 125287566.

It is an arithmetic number, because the mean of its divisors is an integer number (125287566).

Almost surely, 2250575131 is an apocalyptic number.

250575131 is a deficient number, since it is larger than the sum of its proper divisors (1).

250575131 is an equidigital number, since it uses as much as digits as its factorization.

250575131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 250575131 is about 15829.5650919411. The cubic root of 250575131 is about 630.4432347435.

The spelling of 250575131 in words is "two hundred fifty million, five hundred seventy-five thousand, one hundred thirty-one".