261468571 has 8 divisors (see below), whose sum is σ = 321807584. Its totient is φ = 206876160.

The previous prime is 261468569. The next prime is 261468583. The reversal of 261468571 is 175864162.

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 261468571 - 2¹ = 261468569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261468541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436550 + ... + 1436731.

It is an arithmetic number, because the mean of its divisors is an integer number (40225948).

Almost surely, 2^261468571 is an apocalyptic number.

261468571 is a deficient number, since it is larger than the sum of its proper divisors (60339013).

261468571 is a wasteful number, since it uses less digits than its factorization.

261468571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873301.

The product of its digits is 80640, while the sum is 40.

The square root of 261468571 is about 16169.9898268366. The cubic root of 261468571 is about 639.4498617142.

The spelling of 261468571 in words is "two hundred sixty-one million, four hundred sixty-eight thousand, five hundred seventy-one".