53235439 has 4 divisors (see below), whose sum is σ = 53833680. Its totient is φ = 52637200.

The previous prime is 53235437. The next prime is 53235451. The reversal of 53235439 is 93453235.

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 53235439 - 2¹ = 53235437 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 (53235437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298987 + ... + 299164.

It is an arithmetic number, because the mean of its divisors is an integer number (13458420).

Almost surely, 2^53235439 is an apocalyptic number.

53235439 is a deficient number, since it is larger than the sum of its proper divisors (598241).

53235439 is an equidigital number, since it uses as much as digits as its factorization.

53235439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598240.

The product of its digits is 48600, while the sum is 34.

The square root of 53235439 is about 7296.2619881690. The cubic root of 53235439 is about 376.1839652620.

The spelling of 53235439 in words is "fifty-three million, two hundred thirty-five thousand, four hundred thirty-nine".