2542563 has 8 divisors (see below), whose sum is σ = 3766800. Its totient is φ = 1695024.

The previous prime is 2542549. The next prime is 2542567. The reversal of 2542563 is 3652452.

It is not a de Polignac number, because 2542563 - 2⁵ = 2542531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94169 = 2542563 / (2 + 5 + 4 + 2 + 5 + 6 + 3).

It is a d-powerful number, because it can be written as 2³ + 5⁵ + 4² + 2¹³ + 5⁹ + 6⁶ + 3¹² .

It is not an unprimeable number, because it can be changed into a prime (2542567) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 47058 + ... + 47111.

It is an arithmetic number, because the mean of its divisors is an integer number (470850).

2^2542563 is an apocalyptic number.

2542563 is a deficient number, since it is larger than the sum of its proper divisors (1224237).

2542563 is an equidigital number, since it uses as much as digits as its factorization.

2542563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94178 (or 94172 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 2542563 is about 1594.5416269261. The cubic root of 2542563 is about 136.4867756782.

The spelling of 2542563 in words is "two million, five hundred forty-two thousand, five hundred sixty-three".