78053719 has 2 divisors, whose sum is σ = 78053720. Its totient is φ = 78053718.

The previous prime is 78053687. The next prime is 78053737. The reversal of 78053719 is 91735087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78053719 - 2⁵ = 78053687 is a prime.

It is a super-2 number, since 2×78053719² = 12184766099461922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78053419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39026859 + 39026860.

It is an arithmetic number, because the mean of its divisors is an integer number (39026860).

Almost surely, 2^78053719 is an apocalyptic number.

78053719 is a deficient number, since it is larger than the sum of its proper divisors (1).

78053719 is an equidigital number, since it uses as much as digits as its factorization.

78053719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 78053719 is about 8834.8015823786. The cubic root of 78053719 is about 427.3639323923.

The spelling of 78053719 in words is "seventy-eight million, fifty-three thousand, seven hundred nineteen".