53733809 has 2 divisors, whose sum is σ = 53733810. Its totient is φ = 53733808.

The previous prime is 53733769. The next prime is 53733811. The reversal of 53733809 is 90833735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53699584 + 34225 = 7328^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 53733809 - 2¹² = 53729713 is a prime.

Together with 53733811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53733859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26866904 + 26866905.

It is an arithmetic number, because the mean of its divisors is an integer number (26866905).

Almost surely, 2^53733809 is an apocalyptic number.

It is an amenable number.

53733809 is a deficient number, since it is larger than the sum of its proper divisors (1).

53733809 is an equidigital number, since it uses as much as digits as its factorization.

53733809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 53733809 is about 7330.3348491048. The cubic root of 53733809 is about 377.3542182298.

The spelling of 53733809 in words is "fifty-three million, seven hundred thirty-three thousand, eight hundred nine".