42563545 has 4 divisors (see below), whose sum is σ = 51076260. Its totient is φ = 34050832.

The previous prime is 42563539. The next prime is 42563551. The reversal of 42563545 is 54536524.

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

It is an interprime number because it is at equal distance from previous prime (42563539) and next prime (42563551).

It can be written as a sum of positive squares in 2 ways, for example, as 11471769 + 31091776 = 3387^2 + 5576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42563545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42563545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4256350 + ... + 4256359.

It is an arithmetic number, because the mean of its divisors is an integer number (12769065).

Almost surely, 2^42563545 is an apocalyptic number.

It is an amenable number.

42563545 is a deficient number, since it is larger than the sum of its proper divisors (8512715).

42563545 is an equidigital number, since it uses as much as digits as its factorization.

42563545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8512714.

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

The square root of 42563545 is about 6524.0742638324. The cubic root of 42563545 is about 349.1504429350.

The spelling of 42563545 in words is "forty-two million, five hundred sixty-three thousand, five hundred forty-five".