261012527 has 2 divisors, whose sum is σ = 261012528. Its totient is φ = 261012526.

The previous prime is 261012517. The next prime is 261012569. The reversal of 261012527 is 725210162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261012527 - 2⁶ = 261012463 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 261012496 and 261012505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261012517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130506263 + 130506264.

It is an arithmetic number, because the mean of its divisors is an integer number (130506264).

Almost surely, 2^261012527 is an apocalyptic number.

261012527 is a deficient number, since it is larger than the sum of its proper divisors (1).

261012527 is an equidigital number, since it uses as much as digits as its factorization.

261012527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 261012527 is about 16155.8821176685. The cubic root of 261012527 is about 639.0778769426.

Adding to 261012527 its reverse (725210162), we get a palindrome (986222689).

The spelling of 261012527 in words is "two hundred sixty-one million, twelve thousand, five hundred twenty-seven".