53528239 has 2 divisors, whose sum is σ = 53528240. Its totient is φ = 53528238.

The previous prime is 53528231. The next prime is 53528273. The reversal of 53528239 is 93282535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53528239 - 2³ = 53528231 is a prime.

It is a super-2 number, since 2×53528239² = 5730544740882242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53528198 and 53528207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53528231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26764119 + 26764120.

It is an arithmetic number, because the mean of its divisors is an integer number (26764120).

Almost surely, 2^53528239 is an apocalyptic number.

53528239 is a deficient number, since it is larger than the sum of its proper divisors (1).

53528239 is an equidigital number, since it uses as much as digits as its factorization.

53528239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 53528239 is about 7316.2995428017. The cubic root of 53528239 is about 376.8723872532.

The spelling of 53528239 in words is "fifty-three million, five hundred twenty-eight thousand, two hundred thirty-nine".