538650257 has 2 divisors, whose sum is σ = 538650258. Its totient is φ = 538650256.

The previous prime is 538650241. The next prime is 538650367. The reversal of 538650257 is 752056835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490888336 + 47761921 = 22156^2 + 6911^2 .

It is a cyclic number.

It is not a de Polignac number, because 538650257 - 2⁴ = 538650241 is a prime.

It is not a weakly prime, because it can be changed into another prime (538658257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269325128 + 269325129.

It is an arithmetic number, because the mean of its divisors is an integer number (269325129).

Almost surely, 2^538650257 is an apocalyptic number.

It is an amenable number.

538650257 is a deficient number, since it is larger than the sum of its proper divisors (1).

538650257 is an equidigital number, since it uses as much as digits as its factorization.

538650257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 538650257 is about 23208.8400614938. The cubic root of 538650257 is about 813.6462436858.

The spelling of 538650257 in words is "five hundred thirty-eight million, six hundred fifty thousand, two hundred fifty-seven".