53133439 has 2 divisors, whose sum is σ = 53133440. Its totient is φ = 53133438.

The previous prime is 53133419. The next prime is 53133463. The reversal of 53133439 is 93433135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53133439 - 2⁵ = 53133407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53133439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53133419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26566719 + 26566720.

It is an arithmetic number, because the mean of its divisors is an integer number (26566720).

Almost surely, 2^53133439 is an apocalyptic number.

53133439 is a deficient number, since it is larger than the sum of its proper divisors (1).

53133439 is an equidigital number, since it uses as much as digits as its factorization.

53133439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 31.

The square root of 53133439 is about 7289.2687561922. The cubic root of 53133439 is about 375.9435533757.

The spelling of 53133439 in words is "fifty-three million, one hundred thirty-three thousand, four hundred thirty-nine".