53718779 has 2 divisors, whose sum is σ = 53718780. Its totient is φ = 53718778.

The previous prime is 53718773. The next prime is 53718787. The reversal of 53718779 is 97781735.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53718779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53718773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26859389 + 26859390.

It is an arithmetic number, because the mean of its divisors is an integer number (26859390).

Almost surely, 2^53718779 is an apocalyptic number.

53718779 is a deficient number, since it is larger than the sum of its proper divisors (1).

53718779 is an equidigital number, since it uses as much as digits as its factorization.

53718779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 47.

The square root of 53718779 is about 7329.3095854930. The cubic root of 53718779 is about 377.3190314272.

The spelling of 53718779 in words is "fifty-three million, seven hundred eighteen thousand, seven hundred seventy-nine".