261024163 has 8 divisors (see below), whose sum is σ = 267608880. Its totient is φ = 254449920.

The previous prime is 261024151. The next prime is 261024167. The reversal of 261024163 is 361420162.

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 261024163 - 2⁵ = 261024131 is a prime.

It is a super-2 number, since 2×261024163² = 136267227339701138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261024167) 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, 79531 + ... + 82747.

It is an arithmetic number, because the mean of its divisors is an integer number (33451110).

Almost surely, 2^261024163 is an apocalyptic number.

261024163 is a deficient number, since it is larger than the sum of its proper divisors (6584717).

261024163 is a wasteful number, since it uses less digits than its factorization.

261024163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 261024163 is about 16156.2422301722. The cubic root of 261024163 is about 639.0873735490.

The spelling of 261024163 in words is "two hundred sixty-one million, twenty-four thousand, one hundred sixty-three".