72508853 has 2 divisors, whose sum is σ = 72508854. Its totient is φ = 72508852.

The previous prime is 72508831. The next prime is 72508873. The reversal of 72508853 is 35880527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48469444 + 24039409 = 6962^2 + 4903^2 .

It is a cyclic number.

It is not a de Polignac number, because 72508853 - 2²² = 68314549 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72508873) 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, 36254426 + 36254427.

It is an arithmetic number, because the mean of its divisors is an integer number (36254427).

Almost surely, 2^72508853 is an apocalyptic number.

It is an amenable number.

72508853 is a deficient number, since it is larger than the sum of its proper divisors (1).

72508853 is an equidigital number, since it uses as much as digits as its factorization.

72508853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 72508853 is about 8515.2130331542. The cubic root of 72508853 is about 416.9945175033.

The spelling of 72508853 in words is "seventy-two million, five hundred eight thousand, eight hundred fifty-three".