2578001 has 4 divisors (see below), whose sum is σ = 2690112. Its totient is φ = 2465892.

The previous prime is 2577989. The next prime is 2578003. The reversal of 2578001 is 1008752.

2578001 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 a cyclic number.

It is not a de Polignac number, because 2578001 - 2¹⁸ = 2315857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 112087 = 2578001 / (2 + 5 + 7 + 8 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578003) 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, 56021 + ... + 56066.

It is an arithmetic number, because the mean of its divisors is an integer number (672528).

2^2578001 is an apocalyptic number.

It is an amenable number.

2578001 is a deficient number, since it is larger than the sum of its proper divisors (112111).

2578001 is a wasteful number, since it uses less digits than its factorization.

2578001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112110.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2578001 is about 1605.6154583212. The cubic root of 2578001 is about 137.1179654208.

The spelling of 2578001 in words is "two million, five hundred seventy-eight thousand, one".