261047627 has 2 divisors, whose sum is σ = 261047628. Its totient is φ = 261047626.

The previous prime is 261047599. The next prime is 261047651. The reversal of 261047627 is 726740162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261047627 - 2²⁶ = 193938763 is a prime.

It is a super-2 number, since 2×261047627² = 136291727124662258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (261047687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130523813 + 130523814.

It is an arithmetic number, because the mean of its divisors is an integer number (130523814).

Almost surely, 2^261047627 is an apocalyptic number.

261047627 is a deficient number, since it is larger than the sum of its proper divisors (1).

261047627 is an equidigital number, since it uses as much as digits as its factorization.

261047627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 261047627 is about 16156.9683728105. The cubic root of 261047627 is about 639.1065226023.

Adding to 261047627 its reverse (726740162), we get a palindrome (987787789).

The spelling of 261047627 in words is "two hundred sixty-one million, forty-seven thousand, six hundred twenty-seven".