42553523 has 4 divisors (see below), whose sum is σ = 42966768. Its totient is φ = 42140280.

The previous prime is 42553517. The next prime is 42553543. The reversal of 42553523 is 32535524.

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 42553523 - 2⁸ = 42553267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42553513) 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, 206468 + ... + 206673.

It is an arithmetic number, because the mean of its divisors is an integer number (10741692).

Almost surely, 2^42553523 is an apocalyptic number.

42553523 is a deficient number, since it is larger than the sum of its proper divisors (413245).

42553523 is a wasteful number, since it uses less digits than its factorization.

42553523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413244.

The product of its digits is 18000, while the sum is 29.

The square root of 42553523 is about 6523.3061402942. The cubic root of 42553523 is about 349.1230371631.

The spelling of 42553523 in words is "forty-two million, five hundred fifty-three thousand, five hundred twenty-three".