511136641 has 2 divisors, whose sum is σ = 511136642. Its totient is φ = 511136640.

The previous prime is 511136617. The next prime is 511136669. The reversal of 511136641 is 146631115.

It is an a-pointer prime, because the next prime (511136669) can be obtained adding 511136641 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497111616 + 14025025 = 22296^2 + 3745^2 .

It is a cyclic number.

It is not a de Polignac number, because 511136641 - 2²³ = 502748033 is a prime.

It is a super-2 number, since 2×511136641² = 522521331545525762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511136341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255568320 + 255568321.

It is an arithmetic number, because the mean of its divisors is an integer number (255568321).

Almost surely, 2^511136641 is an apocalyptic number.

It is an amenable number.

511136641 is a deficient number, since it is larger than the sum of its proper divisors (1).

511136641 is an equidigital number, since it uses as much as digits as its factorization.

511136641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 511136641 is about 22608.3312298807. The cubic root of 511136641 is about 799.5500808676.

Adding to 511136641 its reverse (146631115), we get a palindrome (657767756).

The spelling of 511136641 in words is "five hundred eleven million, one hundred thirty-six thousand, six hundred forty-one".