5531350531381 has 2 divisors, whose sum is σ = 5531350531382. Its totient is φ = 5531350531380.

The previous prime is 5531350531337. The next prime is 5531350531391. The reversal of 5531350531381 is 1831350531355.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3722715560356 + 1808634971025 = 1929434^2 + 1344855^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531350531381 - 2¹³ = 5531350523189 is a prime.

It is a super-2 number, since 2×5531350531381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5531350531321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765675265690 + 2765675265691.

It is an arithmetic number, because the mean of its divisors is an integer number (2765675265691).

Almost surely, 2^{5531350531381} is an apocalyptic number.

It is an amenable number.

5531350531381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531350531381 is an equidigital number, since it uses as much as digits as its factorization.

5531350531381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 5531350531381 in words is "five trillion, five hundred thirty-one billion, three hundred fifty million, five hundred thirty-one thousand, three hundred eighty-one".