53239829 has 2 divisors, whose sum is σ = 53239830. Its totient is φ = 53239828.

The previous prime is 53239819. The next prime is 53239859. The reversal of 53239829 is 92893235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 677329 = 7250^2 + 823^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53239829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53239819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26619914 + 26619915.

It is an arithmetic number, because the mean of its divisors is an integer number (26619915).

Almost surely, 2^53239829 is an apocalyptic number.

It is an amenable number.

53239829 is a deficient number, since it is larger than the sum of its proper divisors (1).

53239829 is an equidigital number, since it uses as much as digits as its factorization.

53239829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 53239829 is about 7296.5628209452. The cubic root of 53239829 is about 376.1943055055.

The spelling of 53239829 in words is "fifty-three million, two hundred thirty-nine thousand, eight hundred twenty-nine".