72302453 has 2 divisors, whose sum is σ = 72302454. Its totient is φ = 72302452.

The previous prime is 72302449. The next prime is 72302521. The reversal of 72302453 is 35420327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72301009 + 1444 = 8503^2 + 38^2 .

It is an emirp because it is prime and its reverse (35420327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72302453 - 2² = 72302449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72302953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36151226 + 36151227.

It is an arithmetic number, because the mean of its divisors is an integer number (36151227).

Almost surely, 2^72302453 is an apocalyptic number.

It is an amenable number.

72302453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72302453 is an equidigital number, since it uses as much as digits as its factorization.

72302453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 72302453 is about 8503.0849107839. The cubic root of 72302453 is about 416.5984763786.

The spelling of 72302453 in words is "seventy-two million, three hundred two thousand, four hundred fifty-three".