53819999 has 8 divisors (see below), whose sum is σ = 55644288. Its totient is φ = 52001280.

The previous prime is 53819993. The next prime is 53820001. The reversal of 53819999 is 99991835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53819999 - 2²⁰ = 52771423 is a prime.

It is a Duffinian number.

53819999 is a modest number, since divided by 9999 gives 5381 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 53819999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53819993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29399 + ... + 31175.

It is an arithmetic number, because the mean of its divisors is an integer number (6955536).

Almost surely, 2^53819999 is an apocalyptic number.

53819999 is a deficient number, since it is larger than the sum of its proper divisors (1824289).

53819999 is a wasteful number, since it uses less digits than its factorization.

53819999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785.

The product of its digits is 787320, while the sum is 53.

The square root of 53819999 is about 7336.2114882274. The cubic root of 53819999 is about 377.5558714433. Note that the first 3 decimals are identical.

The spelling of 53819999 in words is "fifty-three million, eight hundred nineteen thousand, nine hundred ninety-nine".