531782376975277 has 2 divisors, whose sum is σ = 531782376975278. Its totient is φ = 531782376975276.

The previous prime is 531782376975221. The next prime is 531782376975389. The reversal of 531782376975277 is 772579673287135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421679202059241 + 110103174916036 = 20534829^2 + 10493006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531782376975277 is a prime.

It is a super-2 number, since 2×531782376975277² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531782376975197 and 531782376975206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531782376970277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265891188487638 + 265891188487639.

It is an arithmetic number, because the mean of its divisors is an integer number (265891188487639).

Almost surely, 2^{531782376975277} is an apocalyptic number.

It is an amenable number.

531782376975277 is a deficient number, since it is larger than the sum of its proper divisors (1).

531782376975277 is an equidigital number, since it uses as much as digits as its factorization.

531782376975277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6534561600, while the sum is 79.

The spelling of 531782376975277 in words is "five hundred thirty-one trillion, seven hundred eighty-two billion, three hundred seventy-six million, nine hundred seventy-five thousand, two hundred seventy-seven".