262285981 has 2 divisors, whose sum is σ = 262285982. Its totient is φ = 262285980.

The previous prime is 262285967. The next prime is 262285993. The reversal of 262285981 is 189582262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171845881 + 90440100 = 13109^2 + 9510^2 .

It is a cyclic number.

It is not a de Polignac number, because 262285981 - 2⁵ = 262285949 is a prime.

It is a super-2 number, since 2×262285981² = 137587871658264722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262285901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131142990 + 131142991.

It is an arithmetic number, because the mean of its divisors is an integer number (131142991).

Almost surely, 2^262285981 is an apocalyptic number.

It is an amenable number.

262285981 is a deficient number, since it is larger than the sum of its proper divisors (1).

262285981 is an equidigital number, since it uses as much as digits as its factorization.

262285981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 262285981 is about 16195.2456295050. The cubic root of 262285981 is about 640.1155235797.

The spelling of 262285981 in words is "two hundred sixty-two million, two hundred eighty-five thousand, nine hundred eighty-one".