72755759 has 4 divisors (see below), whose sum is σ = 73780560. Its totient is φ = 71730960.

The previous prime is 72755747. The next prime is 72755773. The reversal of 72755759 is 95755727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95755727 = 6991 ⋅13697.

It is a cyclic number.

It is not a de Polignac number, because 72755759 - 2²⁰ = 71707183 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 (72755659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512294 + ... + 512435.

It is an arithmetic number, because the mean of its divisors is an integer number (18445140).

Almost surely, 2^72755759 is an apocalyptic number.

72755759 is a deficient number, since it is larger than the sum of its proper divisors (1024801).

72755759 is a wasteful number, since it uses less digits than its factorization.

72755759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024800.

The product of its digits is 771750, while the sum is 47.

The square root of 72755759 is about 8529.6986464939. The cubic root of 72755759 is about 417.4672956561.

The spelling of 72755759 in words is "seventy-two million, seven hundred fifty-five thousand, seven hundred fifty-nine".