53243189 has 2 divisors, whose sum is σ = 53243190. Its totient is φ = 53243188.

The previous prime is 53243161. The next prime is 53243219. The reversal of 53243189 is 98134235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 2235025 = 7142^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 53243189 - 2⁸ = 53242933 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53243119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26621594 + 26621595.

It is an arithmetic number, because the mean of its divisors is an integer number (26621595).

Almost surely, 2^53243189 is an apocalyptic number.

It is an amenable number.

53243189 is a deficient number, since it is larger than the sum of its proper divisors (1).

53243189 is an equidigital number, since it uses as much as digits as its factorization.

53243189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 53243189 is about 7296.7930627091. The cubic root of 53243189 is about 376.2022192942.

The spelling of 53243189 in words is "fifty-three million, two hundred forty-three thousand, one hundred eighty-nine".