511221041 has 2 divisors, whose sum is σ = 511221042. Its totient is φ = 511221040.

The previous prime is 511221013. The next prime is 511221047. The reversal of 511221041 is 140122115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 461041 = 22600^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 511221041 - 2¹⁴ = 511204657 is a prime.

It is a super-2 number, since 2×511221041² = 522693905522247362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (511221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255610520 + 255610521.

It is an arithmetic number, because the mean of its divisors is an integer number (255610521).

Almost surely, 2^511221041 is an apocalyptic number.

It is an amenable number.

511221041 is a deficient number, since it is larger than the sum of its proper divisors (1).

511221041 is an equidigital number, since it uses as much as digits as its factorization.

511221041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 511221041 is about 22610.1977213823. The cubic root of 511221041 is about 799.5940862649.

Adding to 511221041 its reverse (140122115), we get a palindrome (651343156).

The spelling of 511221041 in words is "five hundred eleven million, two hundred twenty-one thousand, forty-one".