5123454779 has 2 divisors, whose sum is σ = 5123454780. Its totient is φ = 5123454778.

The previous prime is 5123454719. The next prime is 5123454797. The reversal of 5123454779 is 9774543215.

Together with next prime (5123454797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5123454779 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5123454719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561727389 + 2561727390.

It is an arithmetic number, because the mean of its divisors is an integer number (2561727390).

Almost surely, 2^5123454779 is an apocalyptic number.

5123454779 is a deficient number, since it is larger than the sum of its proper divisors (1).

5123454779 is an equidigital number, since it uses as much as digits as its factorization.

5123454779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 47.

The square root of 5123454779 is about 71578.3122111719. The cubic root of 5123454779 is about 1723.9353261008.

The spelling of 5123454779 in words is "five billion, one hundred twenty-three million, four hundred fifty-four thousand, seven hundred seventy-nine".