52435391 has 4 divisors (see below), whose sum is σ = 53424792. Its totient is φ = 51445992.

The previous prime is 52435373. The next prime is 52435489. The reversal of 52435391 is 19353425.

52435391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-52435391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52435321) 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 in 3 ways as a sum of consecutive naturals, for example, 494621 + ... + 494726.

It is an arithmetic number, because the mean of its divisors is an integer number (13356198).

Almost surely, 2^52435391 is an apocalyptic number.

52435391 is a deficient number, since it is larger than the sum of its proper divisors (989401).

52435391 is an equidigital number, since it uses as much as digits as its factorization.

52435391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989400.

The product of its digits is 16200, while the sum is 32.

The square root of 52435391 is about 7241.2285559841. The cubic root of 52435391 is about 374.2899535913.

The spelling of 52435391 in words is "fifty-two million, four hundred thirty-five thousand, three hundred ninety-one".