260852857 has 4 divisors (see below), whose sum is σ = 261935476. Its totient is φ = 259770240.

The previous prime is 260852827. The next prime is 260852861. The reversal of 260852857 is 758258062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 758258062 = 2 ⋅379129031.

It can be written as a sum of positive squares in 2 ways, for example, as 111915241 + 148937616 = 10579^2 + 12204^2 .

It is a cyclic number.

It is not a de Polignac number, because 260852857 - 2¹¹ = 260850809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260852807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540948 + ... + 541429.

It is an arithmetic number, because the mean of its divisors is an integer number (65483869).

Almost surely, 2^260852857 is an apocalyptic number.

It is an amenable number.

260852857 is a deficient number, since it is larger than the sum of its proper divisors (1082619).

260852857 is a wasteful number, since it uses less digits than its factorization.

260852857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082618.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 260852857 is about 16150.9398178558. The cubic root of 260852857 is about 638.9475353325.

The spelling of 260852857 in words is "two hundred sixty million, eight hundred fifty-two thousand, eight hundred fifty-seven".