261570841 has 8 divisors (see below), whose sum is σ = 300945600. Its totient is φ = 222697968.

The previous prime is 261570821. The next prime is 261570913. The reversal of 261570841 is 148075162.

261570841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261570841 - 2¹⁷ = 261439769 is a prime.

It is a super-2 number, since 2×261570841² = 136838609722894562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261570797 and 261570806.

It is not an unprimeable number, because it can be changed into a prime (261570811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124351 + ... + 126436.

It is an arithmetic number, because the mean of its divisors is an integer number (37618200).

Almost surely, 2^261570841 is an apocalyptic number.

It is an amenable number.

261570841 is a deficient number, since it is larger than the sum of its proper divisors (39374759).

261570841 is a wasteful number, since it uses less digits than its factorization.

261570841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250943.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 261570841 is about 16173.1518573221. The cubic root of 261570841 is about 639.5332216538.

The spelling of 261570841 in words is "two hundred sixty-one million, five hundred seventy thousand, eight hundred forty-one".