261466227 has 24 divisors (see below), whose sum is σ = 418167360. Its totient is φ = 156095280.

The previous prime is 261466213. The next prime is 261466237. The reversal of 261466227 is 722664162.

261466227 is a `hidden beast` number, since 26 + 1 + 4 + 6 + 622 + 7 = 666.

It is not a de Polignac number, because 261466227 - 2⁷ = 261466099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261466191 and 261466200.

It is not an unprimeable number, because it can be changed into a prime (261466237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13077 + ... + 26342.

It is an arithmetic number, because the mean of its divisors is an integer number (17423640).

Almost surely, 2^261466227 is an apocalyptic number.

261466227 is a deficient number, since it is larger than the sum of its proper divisors (156701133).

261466227 is a wasteful number, since it uses less digits than its factorization.

261466227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39503 (or 39500 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 261466227 is about 16169.9173467275. The cubic root of 261466227 is about 639.4479508727.

It can be divided in two parts, 2614662 and 27, that added together give a square (2614689 = 1617²).

The spelling of 261466227 in words is "two hundred sixty-one million, four hundred sixty-six thousand, two hundred twenty-seven".