511241040253 has 4 divisors (see below), whose sum is σ = 511242503868. Its totient is φ = 511239576640.

The previous prime is 511241040181. The next prime is 511241040259. The reversal of 511241040253 is 352040142115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352040142115 = 5 ⋅70408028423.

It can be written as a sum of positive squares in 2 ways, for example, as 233677493604 + 277563546649 = 483402^2 + 526843^2 .

It is a cyclic number.

It is not a de Polignac number, because 511241040253 - 2⁹ = 511241039741 is a prime.

It is a super-2 number, since 2×511241040253² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511241040259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132075 + ... + 1019767.

It is an arithmetic number, because the mean of its divisors is an integer number (127810625967).

Almost surely, 2^511241040253 is an apocalyptic number.

It is an amenable number.

511241040253 is a deficient number, since it is larger than the sum of its proper divisors (1463615).

511241040253 is an equidigital number, since it uses as much as digits as its factorization.

511241040253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463614.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 511241040253 its reverse (352040142115), we get a palindrome (863281182368).

The spelling of 511241040253 in words is "five hundred eleven billion, two hundred forty-one million, forty thousand, two hundred fifty-three".