42553591 has 2 divisors, whose sum is σ = 42553592. Its totient is φ = 42553590.

The previous prime is 42553583. The next prime is 42553603. The reversal of 42553591 is 19535524.

42553591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42553591 - 2³ = 42553583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42553561) 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 as a sum of consecutive naturals, namely, 21276795 + 21276796.

It is an arithmetic number, because the mean of its divisors is an integer number (21276796).

Almost surely, 2^42553591 is an apocalyptic number.

42553591 is a deficient number, since it is larger than the sum of its proper divisors (1).

42553591 is an equidigital number, since it uses as much as digits as its factorization.

42553591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The square root of 42553591 is about 6523.3113523731. The cubic root of 42553591 is about 349.1232231277.

The spelling of 42553591 in words is "forty-two million, five hundred fifty-three thousand, five hundred ninety-one".