53999959 has 8 divisors (see below), whose sum is σ = 59506832. Its totient is φ = 48686400.

The previous prime is 53999917. The next prime is 53999963. The reversal of 53999959 is 95999935.

It is a happy number.

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 53999959 - 2⁹ = 53999447 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 (53999969) 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, 47742 + ... + 48859.

It is an arithmetic number, because the mean of its divisors is an integer number (7438354).

Almost surely, 2^53999959 is an apocalyptic number.

53999959 is a deficient number, since it is larger than the sum of its proper divisors (5506873).

53999959 is a wasteful number, since it uses less digits than its factorization.

53999959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96657.

The product of its digits is 4428675, while the sum is 58.

The square root of 53999959 is about 7348.4664386524. The cubic root of 53999959 is about 377.9762193078.

The spelling of 53999959 in words is "fifty-three million, nine hundred ninety-nine thousand, nine hundred fifty-nine".