2563975 has 6 divisors (see below), whose sum is σ = 3179360. Its totient is φ = 2051160.

The previous prime is 2563969. The next prime is 2563997. The reversal of 2563975 is 5793652.

It is not a de Polignac number, because 2563975 - 2⁵ = 2563943 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5⁷ + 6² + 3¹² + 9³ + 7 + 5⁹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51255 + ... + 51304.

2^2563975 is an apocalyptic number.

2563975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2563975 is a deficient number, since it is larger than the sum of its proper divisors (615385).

2563975 is a wasteful number, since it uses less digits than its factorization.

2563975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102569 (or 102564 counting only the distinct ones).

The product of its digits is 56700, while the sum is 37.

The square root of 2563975 is about 1601.2417056772. The cubic root of 2563975 is about 136.8688428108.

It can be divided in two parts, 25 and 63975, that added together give a cube (64000 = 40³).

The spelling of 2563975 in words is "two million, five hundred sixty-three thousand, nine hundred seventy-five".