72603353 has 2 divisors, whose sum is σ = 72603354. Its totient is φ = 72603352.

The previous prime is 72603343. The next prime is 72603371. The reversal of 72603353 is 35330627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69672409 + 2930944 = 8347^2 + 1712^2 .

It is an emirp because it is prime and its reverse (35330627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72603353 - 2¹⁸ = 72341209 is a prime.

It is not a weakly prime, because it can be changed into another prime (72603343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36301676 + 36301677.

It is an arithmetic number, because the mean of its divisors is an integer number (36301677).

Almost surely, 2^72603353 is an apocalyptic number.

It is an amenable number.

72603353 is a deficient number, since it is larger than the sum of its proper divisors (1).

72603353 is an equidigital number, since it uses as much as digits as its factorization.

72603353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 72603353 is about 8520.7601186749. The cubic root of 72603353 is about 417.1755936686.

The spelling of 72603353 in words is "seventy-two million, six hundred three thousand, three hundred fifty-three".