72576533 has 2 divisors, whose sum is σ = 72576534. Its totient is φ = 72576532.

The previous prime is 72576509. The next prime is 72576541. The reversal of 72576533 is 33567527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 1898884 = 8407^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 72576533 - 2¹⁰ = 72575509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72576503) 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 as a sum of consecutive naturals, namely, 36288266 + 36288267.

It is an arithmetic number, because the mean of its divisors is an integer number (36288267).

Almost surely, 2^72576533 is an apocalyptic number.

It is an amenable number.

72576533 is a deficient number, since it is larger than the sum of its proper divisors (1).

72576533 is an equidigital number, since it uses as much as digits as its factorization.

72576533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 38.

The square root of 72576533 is about 8519.1861700517. The cubic root of 72576533 is about 417.1242185050.

The spelling of 72576533 in words is "seventy-two million, five hundred seventy-six thousand, five hundred thirty-three".