53006209 has 2 divisors, whose sum is σ = 53006210. Its totient is φ = 53006208.

The previous prime is 53006197. The next prime is 53006227. The reversal of 53006209 is 90260035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 2879809 = 7080^2 + 1697^2 .

It is a cyclic number.

It is not a de Polignac number, because 53006209 - 2⁷ = 53006081 is a prime.

It is not a weakly prime, because it can be changed into another prime (53006299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26503104 + 26503105.

It is an arithmetic number, because the mean of its divisors is an integer number (26503105).

Almost surely, 2^53006209 is an apocalyptic number.

It is an amenable number.

53006209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53006209 is an equidigital number, since it uses as much as digits as its factorization.

53006209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 53006209 is about 7280.5363126627. The cubic root of 53006209 is about 375.6432432633.

The spelling of 53006209 in words is "fifty-three million, six thousand, two hundred nine".