72530959 has 4 divisors (see below), whose sum is σ = 76797504. Its totient is φ = 68264416.

The previous prime is 72530957. The next prime is 72530963. The reversal of 72530959 is 95903527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95903527 = 619 ⋅154933.

It is a cyclic number.

It is not a de Polignac number, because 72530959 - 2¹ = 72530957 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72530957) 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, 2133247 + ... + 2133280.

It is an arithmetic number, because the mean of its divisors is an integer number (19199376).

Almost surely, 2^72530959 is an apocalyptic number.

72530959 is a deficient number, since it is larger than the sum of its proper divisors (4266545).

72530959 is a wasteful number, since it uses less digits than its factorization.

72530959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266544.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 72530959 is about 8516.5109640040. The cubic root of 72530959 is about 417.0368900036.

It can be divided in two parts, 725 and 30959, that added together give a square (31684 = 178²).

The spelling of 72530959 in words is "seventy-two million, five hundred thirty thousand, nine hundred fifty-nine".