72097453 has 2 divisors, whose sum is σ = 72097454. Its totient is φ = 72097452.

The previous prime is 72097439. The next prime is 72097477. The reversal of 72097453 is 35479027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42536484 + 29560969 = 6522^2 + 5437^2 .

It is a cyclic number.

It is not a de Polignac number, because 72097453 - 2¹³ = 72089261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70097453) 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, 36048726 + 36048727.

It is an arithmetic number, because the mean of its divisors is an integer number (36048727).

Almost surely, 2^72097453 is an apocalyptic number.

It is an amenable number.

72097453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72097453 is an equidigital number, since it uses as much as digits as its factorization.

72097453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 72097453 is about 8491.0219055188. The cubic root of 72097453 is about 416.2043748145.

The spelling of 72097453 in words is "seventy-two million, ninety-seven thousand, four hundred fifty-three".