260401 has 4 divisors (see below), whose sum is σ = 262900. Its totient is φ = 257904.

The previous prime is 260399. The next prime is 260411. The reversal of 260401 is 104062.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119025 + 141376 = 345^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 260401 - 2¹ = 260399 is a prime.

It is a Duffinian number.

260401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (260411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (65725).

2²⁶⁰⁴⁰¹ is an apocalyptic number.

It is an amenable number.

260401 is a deficient number, since it is larger than the sum of its proper divisors (2499).

260401 is a wasteful number, since it uses less digits than its factorization.

260401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 260401 is about 510.2950127132. The cubic root of 260401 is about 63.8578387522.

Adding to 260401 its reverse (104062), we get a palindrome (364463).

The spelling of 260401 in words is "two hundred sixty thousand, four hundred one".