2560401 has 6 divisors (see below), whose sum is σ = 3698370. Its totient is φ = 1706928.

The previous prime is 2560399. The next prime is 2560417. The reversal of 2560401 is 1040652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2556801 + 3600 = 1599^2 + 60^2 .

It is not a de Polignac number, because 2560401 - 2¹ = 2560399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142236 + ... + 142253.

It is an arithmetic number, because the mean of its divisors is an integer number (616395).

2^2560401 is an apocalyptic number.

It is an amenable number.

2560401 is a deficient number, since it is larger than the sum of its proper divisors (1137969).

2560401 is a wasteful number, since it uses less digits than its factorization.

2560401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284495 (or 284492 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2560401 is about 1600.1253075931. The cubic root of 2560401 is about 136.8052180732.

The spelling of 2560401 in words is "two million, five hundred sixty thousand, four hundred one".