72530133 has 16 divisors (see below), whose sum is σ = 104360256. Its totient is φ = 44542080.

The previous prime is 72530123. The next prime is 72530141. The reversal of 72530133 is 33103527.

It is not a de Polignac number, because 72530133 - 2¹³ = 72521941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72530123) 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 15 ways as a sum of consecutive naturals, for example, 20641 + ... + 23897.

It is an arithmetic number, because the mean of its divisors is an integer number (6522516).

Almost surely, 2^72530133 is an apocalyptic number.

It is an amenable number.

72530133 is a deficient number, since it is larger than the sum of its proper divisors (31830123).

72530133 is a wasteful number, since it uses less digits than its factorization.

72530133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 72530133 is about 8516.4624698287. The cubic root of 72530133 is about 417.0353068921.

The spelling of 72530133 in words is "seventy-two million, five hundred thirty thousand, one hundred thirty-three".