77054279 has 2 divisors, whose sum is σ = 77054280. Its totient is φ = 77054278.

The previous prime is 77054269. The next prime is 77054281. The reversal of 77054279 is 97245077.

It is a strong prime.

It is an emirp because it is prime and its reverse (97245077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77054279 - 2⁸ = 77054023 is a prime.

Together with 77054281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77054269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38527139 + 38527140.

It is an arithmetic number, because the mean of its divisors is an integer number (38527140).

Almost surely, 2^77054279 is an apocalyptic number.

77054279 is a deficient number, since it is larger than the sum of its proper divisors (1).

77054279 is an equidigital number, since it uses as much as digits as its factorization.

77054279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 77054279 is about 8778.0566755974. The cubic root of 77054279 is about 425.5320285215.

The spelling of 77054279 in words is "seventy-seven million, fifty-four thousand, two hundred seventy-nine".