542563 has 4 divisors (see below), whose sum is σ = 620080. Its totient is φ = 465048.

The previous prime is 542557. The next prime is 542567. The reversal of 542563 is 365245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542563 - 2¹³ = 534371 is a prime.

It is a d-powerful number, because it can be written as 5⁴ + 4⁹ + 5⁶ + 2¹⁸ + 6⁴ + 3⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38748 + ... + 38761.

It is an arithmetic number, because the mean of its divisors is an integer number (155020).

2⁵⁴²⁵⁶³ is an apocalyptic number.

542563 is a deficient number, since it is larger than the sum of its proper divisors (77517).

542563 is an equidigital number, since it uses as much as digits as its factorization.

542563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77516.

The product of its digits is 3600, while the sum is 25.

The square root of 542563 is about 736.5887590780. The cubic root of 542563 is about 81.5611595078.

The spelling of 542563 in words is "five hundred forty-two thousand, five hundred sixty-three".