5051381381 has 2 divisors, whose sum is σ = 5051381382. Its totient is φ = 5051381380.

The previous prime is 5051381341. The next prime is 5051381453. The reversal of 5051381381 is 1831831505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4280430625 + 770950756 = 65425^2 + 27766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5051381381 is a prime.

It is a super-2 number, since 2×5051381381² = 51032907712626934322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5051381341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525690690 + 2525690691.

It is an arithmetic number, because the mean of its divisors is an integer number (2525690691).

Almost surely, 2^5051381381 is an apocalyptic number.

It is an amenable number.

5051381381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051381381 is an equidigital number, since it uses as much as digits as its factorization.

5051381381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 5051381381 is about 71073.0707159892. The cubic root of 5051381381 is about 1715.8133914158.

The spelling of 5051381381 in words is "five billion, fifty-one million, three hundred eighty-one thousand, three hundred eighty-one".