557236241 has 2 divisors, whose sum is σ = 557236242. Its totient is φ = 557236240.

The previous prime is 557236219. The next prime is 557236259. The reversal of 557236241 is 142632755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489338641 + 67897600 = 22121^2 + 8240^2 .

It is a cyclic number.

It is not a de Polignac number, because 557236241 - 2⁶ = 557236177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (557230241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278618120 + 278618121.

It is an arithmetic number, because the mean of its divisors is an integer number (278618121).

Almost surely, 2^557236241 is an apocalyptic number.

It is an amenable number.

557236241 is a deficient number, since it is larger than the sum of its proper divisors (1).

557236241 is an equidigital number, since it uses as much as digits as its factorization.

557236241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 557236241 is about 23605.8518380507. The cubic root of 557236241 is about 822.8988422347.

Adding to 557236241 its reverse (142632755), we get a palindrome (699868996).

The spelling of 557236241 in words is "five hundred fifty-seven million, two hundred thirty-six thousand, two hundred forty-one".