260505555 has 16 divisors (see below), whose sum is σ = 430255104. Its totient is φ = 134454240.

The previous prime is 260505551. The next prime is 260505559. The reversal of 260505555 is 555505062.

It is an interprime number because it is at equal distance from previous prime (260505551) and next prime (260505559).

It is not a de Polignac number, because 260505555 - 2² = 260505551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260505551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279649 + ... + 280578.

It is an arithmetic number, because the mean of its divisors is an integer number (26890944).

Almost surely, 2^260505555 is an apocalyptic number.

260505555 is a deficient number, since it is larger than the sum of its proper divisors (169749549).

260505555 is a wasteful number, since it uses less digits than its factorization.

260505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560266.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 260505555 is about 16140.1844784996. The cubic root of 260505555 is about 638.6638424290.

The spelling of 260505555 in words is "two hundred sixty million, five hundred five thousand, five hundred fifty-five".