78630053 has 2 divisors, whose sum is σ = 78630054. Its totient is φ = 78630052.

The previous prime is 78630047. The next prime is 78630089. The reversal of 78630053 is 35003687.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78552769 + 77284 = 8863^2 + 278^2 .

It is an emirp because it is prime and its reverse (35003687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78630053 - 2¹² = 78625957 is a prime.

It is a Sophie Germain 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 (78630553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39315026 + 39315027.

It is an arithmetic number, because the mean of its divisors is an integer number (39315027).

Almost surely, 2^78630053 is an apocalyptic number.

It is an amenable number.

78630053 is a deficient number, since it is larger than the sum of its proper divisors (1).

78630053 is an equidigital number, since it uses as much as digits as its factorization.

78630053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 78630053 is about 8867.3588514281. The cubic root of 78630053 is about 428.4132123867.

The spelling of 78630053 in words is "seventy-eight million, six hundred thirty thousand, fifty-three".