53783999 has 2 divisors, whose sum is σ = 53784000. Its totient is φ = 53783998.

The previous prime is 53783993. The next prime is 53784001. The reversal of 53783999 is 99938735.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53783999 is a prime.

Together with 53784001, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53783999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53783993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26891999 + 26892000.

It is an arithmetic number, because the mean of its divisors is an integer number (26892000).

Almost surely, 2^53783999 is an apocalyptic number.

53783999 is a deficient number, since it is larger than the sum of its proper divisors (1).

53783999 is an equidigital number, since it uses as much as digits as its factorization.

53783999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 53783999 is about 7333.7574953089. The cubic root of 53783999 is about 377.4716707539.

The spelling of 53783999 in words is "fifty-three million, seven hundred eighty-three thousand, nine hundred ninety-nine".