261441827 has 6 divisors (see below), whose sum is σ = 277725708. Its totient is φ = 246062624.

The previous prime is 261441823. The next prime is 261441847. The reversal of 261441827 is 728144162.

261441827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261441827 - 2² = 261441823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261441823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452033 + ... + 452610.

It is an arithmetic number, because the mean of its divisors is an integer number (46287618).

Almost surely, 2^261441827 is an apocalyptic number.

261441827 is a deficient number, since it is larger than the sum of its proper divisors (16283881).

261441827 is an equidigital number, since it uses as much as digits as its factorization.

261441827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904677 (or 904660 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 261441827 is about 16169.1628416563. The cubic root of 261441827 is about 639.4280591828.

Adding to 261441827 its reverse (728144162), we get a palindrome (989585989).

The spelling of 261441827 in words is "two hundred sixty-one million, four hundred forty-one thousand, eight hundred twenty-seven".