53073809 has 2 divisors, whose sum is σ = 53073810. Its totient is φ = 53073808.

The previous prime is 53073791. The next prime is 53073833. The reversal of 53073809 is 90837035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30558784 + 22515025 = 5528^2 + 4745^2 .

It is a cyclic number.

It is not a de Polignac number, because 53073809 - 2¹² = 53069713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53073869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26536904 + 26536905.

It is an arithmetic number, because the mean of its divisors is an integer number (26536905).

Almost surely, 2^53073809 is an apocalyptic number.

It is an amenable number.

53073809 is a deficient number, since it is larger than the sum of its proper divisors (1).

53073809 is an equidigital number, since it uses as much as digits as its factorization.

53073809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53073809 is about 7285.1773485619. The cubic root of 53073809 is about 375.8028641606.

The spelling of 53073809 in words is "fifty-three million, seventy-three thousand, eight hundred nine".