260528381 has 2 divisors, whose sum is σ = 260528382. Its totient is φ = 260528380.

The previous prime is 260528351. The next prime is 260528407. The reversal of 260528381 is 183825062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221265625 + 39262756 = 14875^2 + 6266^2 .

It is a cyclic number.

It is not a de Polignac number, because 260528381 - 2¹⁴ = 260511997 is a prime.

It is a super-2 number, since 2×260528381² = 135750074612962322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260528311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130264190 + 130264191.

It is an arithmetic number, because the mean of its divisors is an integer number (130264191).

Almost surely, 2^260528381 is an apocalyptic number.

It is an amenable number.

260528381 is a deficient number, since it is larger than the sum of its proper divisors (1).

260528381 is an equidigital number, since it uses as much as digits as its factorization.

260528381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 260528381 is about 16140.8915800832. The cubic root of 260528381 is about 638.6824955374.

The spelling of 260528381 in words is "two hundred sixty million, five hundred twenty-eight thousand, three hundred eighty-one".