78995453 has 2 divisors, whose sum is σ = 78995454. Its totient is φ = 78995452.

The previous prime is 78995443. The next prime is 78995531. The reversal of 78995453 is 35459987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 9406489 = 8342^2 + 3067^2 .

It is an emirp because it is prime and its reverse (35459987) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78995453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78995443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39497726 + 39497727.

It is an arithmetic number, because the mean of its divisors is an integer number (39497727).

Almost surely, 2^78995453 is an apocalyptic number.

It is an amenable number.

78995453 is a deficient number, since it is larger than the sum of its proper divisors (1).

78995453 is an equidigital number, since it uses as much as digits as its factorization.

78995453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 50.

The square root of 78995453 is about 8887.9386249006. The cubic root of 78995453 is about 429.0758102867.

The spelling of 78995453 in words is "seventy-eight million, nine hundred ninety-five thousand, four hundred fifty-three".