260566531 has 4 divisors (see below), whose sum is σ = 275893992. Its totient is φ = 245239072.

The previous prime is 260566529. The next prime is 260566639. The reversal of 260566531 is 135665062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260566531 - 2¹ = 260566529 is a prime.

It is a super-2 number, since 2×260566531² = 135789834154747922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260566231) 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, 7663705 + ... + 7663738.

It is an arithmetic number, because the mean of its divisors is an integer number (68973498).

Almost surely, 2^260566531 is an apocalyptic number.

260566531 is a deficient number, since it is larger than the sum of its proper divisors (15327461).

260566531 is a wasteful number, since it uses less digits than its factorization.

260566531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15327460.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 260566531 is about 16142.0733178858. The cubic root of 260566531 is about 638.7136687860.

The spelling of 260566531 in words is "two hundred sixty million, five hundred sixty-six thousand, five hundred thirty-one".