53999589 has 8 divisors (see below), whose sum is σ = 82285120. Its totient is φ = 30856896.

The previous prime is 53999587. The next prime is 53999591. The reversal of 53999589 is 98599935.

It is an interprime number because it is at equal distance from previous prime (53999587) and next prime (53999591).

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

It is not a de Polignac number, because 53999589 - 2¹ = 53999587 is a prime.

It is a super-2 number, since 2×53999589² = 5831911224337842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53999587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285684 + ... + 1285725.

It is an arithmetic number, because the mean of its divisors is an integer number (10285640).

Almost surely, 2^53999589 is an apocalyptic number.

It is an amenable number.

53999589 is a deficient number, since it is larger than the sum of its proper divisors (28285531).

53999589 is a wasteful number, since it uses less digits than its factorization.

53999589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571419.

The product of its digits is 3936600, while the sum is 57.

The square root of 53999589 is about 7348.4412632884. The cubic root of 53999589 is about 377.9753560261.

It can be divided in two parts, 539 and 99589, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 53999589 in words is "fifty-three million, nine hundred ninety-nine thousand, five hundred eighty-nine".