261041033 has 8 divisors (see below), whose sum is σ = 286852320. Its totient is φ = 235576480.

The previous prime is 261041017. The next prime is 261041041. The reversal of 261041033 is 330140162.

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 261041033 - 2⁴ = 261041017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261040996 and 261041014.

It is not an unprimeable number, because it can be changed into a prime (261041063) 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, 85103 + ... + 88116.

It is an arithmetic number, because the mean of its divisors is an integer number (35856540).

Almost surely, 2^261041033 is an apocalyptic number.

It is an amenable number.

261041033 is a deficient number, since it is larger than the sum of its proper divisors (25811287).

261041033 is a wasteful number, since it uses less digits than its factorization.

261041033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173367.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 261041033 is about 16156.7643109628. The cubic root of 261041033 is about 639.1011413315.

Adding to 261041033 its reverse (330140162), we get a palindrome (591181195).

The spelling of 261041033 in words is "two hundred sixty-one million, forty-one thousand, thirty-three".