53538439 has 2 divisors, whose sum is σ = 53538440. Its totient is φ = 53538438.

The previous prime is 53538431. The next prime is 53538449. The reversal of 53538439 is 93483535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53538439 - 2³ = 53538431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53538431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26769219 + 26769220.

It is an arithmetic number, because the mean of its divisors is an integer number (26769220).

Almost surely, 2^53538439 is an apocalyptic number.

53538439 is a deficient number, since it is larger than the sum of its proper divisors (1).

53538439 is an equidigital number, since it uses as much as digits as its factorization.

53538439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 53538439 is about 7316.9965832984. The cubic root of 53538439 is about 376.8963238661.

The spelling of 53538439 in words is "fifty-three million, five hundred thirty-eight thousand, four hundred thirty-nine".