500011252381 has 2 divisors, whose sum is σ = 500011252382. Its totient is φ = 500011252380.

The previous prime is 500011252339. The next prime is 500011252439. The reversal of 500011252381 is 183252110005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369249460281 + 130761792100 = 607659^2 + 361610^2 .

It is a cyclic number.

It is not a de Polignac number, because 500011252381 - 2⁷ = 500011252253 is a prime.

It is a super-2 number, since 2×500011252381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500011253381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250005626190 + 250005626191.

It is an arithmetic number, because the mean of its divisors is an integer number (250005626191).

Almost surely, 2^500011252381 is an apocalyptic number.

It is an amenable number.

500011252381 is a deficient number, since it is larger than the sum of its proper divisors (1).

500011252381 is an equidigital number, since it uses as much as digits as its factorization.

500011252381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 500011252381 its reverse (183252110005), we get a palindrome (683263362386).

The spelling of 500011252381 in words is "five hundred billion, eleven million, two hundred fifty-two thousand, three hundred eighty-one".