260522981 has 2 divisors, whose sum is σ = 260522982. Its totient is φ = 260522980.

The previous prime is 260522959. The next prime is 260522987. The reversal of 260522981 is 189225062.

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., 253892356 + 6630625 = 15934^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 260522981 - 2⁶ = 260522917 is a prime.

It is a super-2 number, since 2×260522981² = 135744447258252722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260522987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130261490 + 130261491.

It is an arithmetic number, because the mean of its divisors is an integer number (130261491).

Almost surely, 2^260522981 is an apocalyptic number.

It is an amenable number.

260522981 is a deficient number, since it is larger than the sum of its proper divisors (1).

260522981 is an equidigital number, since it uses as much as digits as its factorization.

260522981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 260522981 is about 16140.7243022115. The cubic root of 260522981 is about 638.6780828265.

The spelling of 260522981 in words is "two hundred sixty million, five hundred twenty-two thousand, nine hundred eighty-one".