73559 has 4 divisors (see below), whose sum is σ = 77904. Its totient is φ = 69216.

The previous prime is 73553. The next prime is 73561. The reversal of 73559 is 95537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95537 = 13 ⋅7349.

It is a cyclic number.

It is not a de Polignac number, because 73559 - 2⁸ = 73303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2147 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (19476).

2⁷³⁵⁵⁹ is an apocalyptic number.

73559 is a deficient number, since it is larger than the sum of its proper divisors (4345).

73559 is a wasteful number, since it uses less digits than its factorization.

73559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344.

The product of its digits is 4725, while the sum is 29.

The square root of 73559 is about 271.2176247960. The cubic root of 73559 is about 41.8997989293.

It can be divided in two parts, 735 and 59, that multiplied together give a triangular number (43365 = T₂₉₄).

The spelling of 73559 in words is "seventy-three thousand, five hundred fifty-nine".