527274809381 has 2 divisors, whose sum is σ = 527274809382. Its totient is φ = 527274809380.

The previous prime is 527274809311. The next prime is 527274809441. The reversal of 527274809381 is 183908472725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288789086881 + 238485722500 = 537391^2 + 488350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-527274809381 is a prime.

It is a super-2 number, since 2×527274809381² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (527274809311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263637404690 + 263637404691.

It is an arithmetic number, because the mean of its divisors is an integer number (263637404691).

Almost surely, 2^527274809381 is an apocalyptic number.

It is an amenable number.

527274809381 is a deficient number, since it is larger than the sum of its proper divisors (1).

527274809381 is an equidigital number, since it uses as much as digits as its factorization.

527274809381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 527274809381 in words is "five hundred twenty-seven billion, two hundred seventy-four million, eight hundred nine thousand, three hundred eighty-one".