261152133 has 8 divisors (see below), whose sum is σ = 379857696. Its totient is φ = 158274000.

The previous prime is 261152123. The next prime is 261152137. The reversal of 261152133 is 331251162.

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

It is not a de Polignac number, because 261152133 - 2⁹ = 261151621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261152137) 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, 3956818 + ... + 3956883.

It is an arithmetic number, because the mean of its divisors is an integer number (47482212).

Almost surely, 2^261152133 is an apocalyptic number.

It is an amenable number.

261152133 is a deficient number, since it is larger than the sum of its proper divisors (118705563).

261152133 is a wasteful number, since it uses less digits than its factorization.

261152133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7913715.

The product of its digits is 1080, while the sum is 24.

The square root of 261152133 is about 16160.2021336368. The cubic root of 261152133 is about 639.1917963844.

The spelling of 261152133 in words is "two hundred sixty-one million, one hundred fifty-two thousand, one hundred thirty-three".