260400055 has 8 divisors (see below), whose sum is σ = 312624144. Its totient is φ = 208224000.

The previous prime is 260400047. The next prime is 260400059. The reversal of 260400055 is 550004062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 260400055 - 2³ = 260400047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260399999 and 260400035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260400059) 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, 1255 + ... + 22855.

It is an arithmetic number, because the mean of its divisors is an integer number (39078018).

Almost surely, 2^260400055 is an apocalyptic number.

260400055 is a deficient number, since it is larger than the sum of its proper divisors (52224089).

260400055 is a wasteful number, since it uses less digits than its factorization.

260400055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24017.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 260400055 is about 16136.9159073226. The cubic root of 260400055 is about 638.5776150506.

The spelling of 260400055 in words is "two hundred sixty million, four hundred thousand, fifty-five".