53857999 has 8 divisors (see below), whose sum is σ = 58136400. Its totient is φ = 49598976.

The previous prime is 53857997. The next prime is 53858009. The reversal of 53857999 is 99975835.

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 53857999 - 2¹ = 53857997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53857997) 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 in 7 ways as a sum of consecutive naturals, for example, 1224 + ... + 10450.

It is an arithmetic number, because the mean of its divisors is an integer number (7267050).

Almost surely, 2^53857999 is an apocalyptic number.

53857999 is a deficient number, since it is larger than the sum of its proper divisors (4278401).

53857999 is a wasteful number, since it uses less digits than its factorization.

53857999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9689.

The product of its digits is 3061800, while the sum is 55.

The square root of 53857999 is about 7338.8009238567. The cubic root of 53857999 is about 377.6447092240.

The spelling of 53857999 in words is "fifty-three million, eight hundred fifty-seven thousand, nine hundred ninety-nine".