2563401 has 4 divisors (see below), whose sum is σ = 3417872. Its totient is φ = 1708932.

The previous prime is 2563387. The next prime is 2563409. The reversal of 2563401 is 1043652.

It is a happy number.

2563401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2563401 - 2⁵ = 2563369 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2563409) 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, 427231 + ... + 427236.

It is an arithmetic number, because the mean of its divisors is an integer number (854468).

2^2563401 is an apocalyptic number.

It is an amenable number.

2563401 is a deficient number, since it is larger than the sum of its proper divisors (854471).

2563401 is an equidigital number, since it uses as much as digits as its factorization.

2563401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854470.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2563401 is about 1601.0624597435. The cubic root of 2563401 is about 136.8586283874.

The spelling of 2563401 in words is "two million, five hundred sixty-three thousand, four hundred one".