53206009 has 2 divisors, whose sum is σ = 53206010. Its totient is φ = 53206008.

The previous prime is 53206001. The next prime is 53206019. The reversal of 53206009 is 90060235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33872400 + 19333609 = 5820^2 + 4397^2 .

It is a cyclic number.

It is not a de Polignac number, because 53206009 - 2³ = 53206001 is a prime.

It is not a weakly prime, because it can be changed into another prime (53206001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26603004 + 26603005.

It is an arithmetic number, because the mean of its divisors is an integer number (26603005).

Almost surely, 2^53206009 is an apocalyptic number.

It is an amenable number.

53206009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53206009 is an equidigital number, since it uses as much as digits as its factorization.

53206009 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 53206009 is about 7294.2449232254. The cubic root of 53206009 is about 376.1146309046.

The spelling of 53206009 in words is "fifty-three million, two hundred six thousand, nine".