261255227 has 2 divisors, whose sum is σ = 261255228. Its totient is φ = 261255226.

The previous prime is 261255223. The next prime is 261255251. The reversal of 261255227 is 722552162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261255227 - 2² = 261255223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261255193 and 261255202.

It is not a weakly prime, because it can be changed into another prime (261255223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130627613 + 130627614.

It is an arithmetic number, because the mean of its divisors is an integer number (130627614).

Almost surely, 2^261255227 is an apocalyptic number.

261255227 is a deficient number, since it is larger than the sum of its proper divisors (1).

261255227 is an equidigital number, since it uses as much as digits as its factorization.

261255227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 261255227 is about 16163.3915686034. The cubic root of 261255227 is about 639.2758957290.

The spelling of 261255227 in words is "two hundred sixty-one million, two hundred fifty-five thousand, two hundred twenty-seven".