53809619 has 2 divisors, whose sum is σ = 53809620. Its totient is φ = 53809618.

The previous prime is 53809597. The next prime is 53809621. The reversal of 53809619 is 91690835.

53809619 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 is a cyclic number.

It is not a de Polignac number, because 53809619 - 2²⁴ = 37032403 is a prime.

It is a super-2 number, since 2×53809619² = 5790950193850322, which contains 22 as substring.

Together with 53809621, 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 (53809649) 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, 26904809 + 26904810.

It is an arithmetic number, because the mean of its divisors is an integer number (26904810).

Almost surely, 2^53809619 is an apocalyptic number.

53809619 is a deficient number, since it is larger than the sum of its proper divisors (1).

53809619 is an equidigital number, since it uses as much as digits as its factorization.

53809619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 53809619 is about 7335.5040044976. The cubic root of 53809619 is about 377.5315974312.

The spelling of 53809619 in words is "fifty-three million, eight hundred nine thousand, six hundred nineteen".