511872241 has 2 divisors, whose sum is σ = 511872242. Its totient is φ = 511872240.

The previous prime is 511872233. The next prime is 511872247. The reversal of 511872241 is 142278115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421070400 + 90801841 = 20520^2 + 9529^2 .

It is a cyclic number.

It is not a de Polignac number, because 511872241 - 2³ = 511872233 is a prime.

It is a super-2 number, since 2×511872241² = 524026382212724162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511872247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255936120 + 255936121.

It is an arithmetic number, because the mean of its divisors is an integer number (255936121).

Almost surely, 2^511872241 is an apocalyptic number.

It is an amenable number.

511872241 is a deficient number, since it is larger than the sum of its proper divisors (1).

511872241 is an equidigital number, since it uses as much as digits as its factorization.

511872241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 31.

The square root of 511872241 is about 22624.5937201091. The cubic root of 511872241 is about 799.9334533187.

The spelling of 511872241 in words is "five hundred eleven million, eight hundred seventy-two thousand, two hundred forty-one".