261375411 has 8 divisors (see below), whose sum is σ = 380182464. Its totient is φ = 158409320.

The previous prime is 261375379. The next prime is 261375469. The reversal of 261375411 is 114573162.

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 261375411 - 2⁵ = 261375379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261375481) 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, 3960201 + ... + 3960266.

It is an arithmetic number, because the mean of its divisors is an integer number (47522808).

Almost surely, 2^261375411 is an apocalyptic number.

261375411 is a deficient number, since it is larger than the sum of its proper divisors (118807053).

261375411 is a wasteful number, since it uses less digits than its factorization.

261375411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920481.

The product of its digits is 5040, while the sum is 30.

The square root of 261375411 is about 16167.1089252222. The cubic root of 261375411 is about 639.3739083848.

The spelling of 261375411 in words is "two hundred sixty-one million, three hundred seventy-five thousand, four hundred eleven".