261094441 has 4 divisors (see below), whose sum is σ = 262215252. Its totient is φ = 259973632.

The previous prime is 261094417. The next prime is 261094481. The reversal of 261094441 is 144490162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71233600 + 189860841 = 8440^2 + 13779^2 .

It is a cyclic number.

It is not a de Polignac number, because 261094441 - 2¹³ = 261086249 is a prime.

It is a super-2 number, since 2×261094441² = 136340614242204962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261094481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560056 + ... + 560521.

It is an arithmetic number, because the mean of its divisors is an integer number (65553813).

Almost surely, 2^261094441 is an apocalyptic number.

It is an amenable number.

261094441 is a deficient number, since it is larger than the sum of its proper divisors (1120811).

261094441 is a wasteful number, since it uses less digits than its factorization.

261094441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120810.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 261094441 is about 16158.4170326180. The cubic root of 261094441 is about 639.1447242449.

The spelling of 261094441 in words is "two hundred sixty-one million, ninety-four thousand, four hundred forty-one".