527981 has 2 divisors, whose sum is σ = 527982. Its totient is φ = 527980.

The previous prime is 527941. The next prime is 527983. The reversal of 527981 is 189725.

527981 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401956 + 126025 = 634^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 527981 - 2¹⁰ = 526957 is a prime.

It is a super-2 number, since 2×527981² = 557527872722, which contains 22 as substring.

Together with 527983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 527981.

It is not a weakly prime, because it can be changed into another prime (527983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263990 + 263991.

It is an arithmetic number, because the mean of its divisors is an integer number (263991).

2⁵²⁷⁹⁸¹ is an apocalyptic number.

It is an amenable number.

527981 is a deficient number, since it is larger than the sum of its proper divisors (1).

527981 is an equidigital number, since it uses as much as digits as its factorization.

527981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 527981 is about 726.6230109211. The cubic root of 527981 is about 80.8238309114.

The spelling of 527981 in words is "five hundred twenty-seven thousand, nine hundred eighty-one".