42554563 has 4 divisors (see below), whose sum is σ = 43544248. Its totient is φ = 41564880.

The previous prime is 42554543. The next prime is 42554591. The reversal of 42554563 is 36545524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42554563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42554543) 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, 494778 + ... + 494863.

It is an arithmetic number, because the mean of its divisors is an integer number (10886062).

Almost surely, 2^42554563 is an apocalyptic number.

42554563 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42554563 is a deficient number, since it is larger than the sum of its proper divisors (989685).

42554563 is an equidigital number, since it uses as much as digits as its factorization.

42554563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989684.

The product of its digits is 72000, while the sum is 34.

The square root of 42554563 is about 6523.3858539872. The cubic root of 42554563 is about 349.1258813068.

The spelling of 42554563 in words is "forty-two million, five hundred fifty-four thousand, five hundred sixty-three".