260505243 has 6 divisors (see below), whose sum is σ = 376285364. Its totient is φ = 173670156.

The previous prime is 260505241. The next prime is 260505269. The reversal of 260505243 is 342505062.

260505243 is a `hidden beast` number, since 2 + 605 + 0 + 52 + 4 + 3 = 666.

It is not a de Polignac number, because 260505243 - 2¹ = 260505241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260505241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14472505 + ... + 14472522.

Almost surely, 2^260505243 is an apocalyptic number.

260505243 is a deficient number, since it is larger than the sum of its proper divisors (115780121).

260505243 is a wasteful number, since it uses less digits than its factorization.

260505243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28945033 (or 28945030 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 260505243 is about 16140.1748131797. The cubic root of 260505243 is about 638.6635874591.

The spelling of 260505243 in words is "two hundred sixty million, five hundred five thousand, two hundred forty-three".