53831209 has 2 divisors, whose sum is σ = 53831210. Its totient is φ = 53831208.

The previous prime is 53831203. The next prime is 53831213. The reversal of 53831209 is 90213835.

It is a happy number.

53831209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 18249984 = 5965^2 + 4272^2 .

It is a cyclic number.

It is not a de Polignac number, because 53831209 - 2⁵ = 53831177 is a prime.

It is not a weakly prime, because it can be changed into another prime (53831203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26915604 + 26915605.

It is an arithmetic number, because the mean of its divisors is an integer number (26915605).

Almost surely, 2^53831209 is an apocalyptic number.

It is an amenable number.

53831209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53831209 is an equidigital number, since it uses as much as digits as its factorization.

53831209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 53831209 is about 7336.9754667710. The cubic root of 53831209 is about 377.5820829358.

The spelling of 53831209 in words is "fifty-three million, eight hundred thirty-one thousand, two hundred nine".