54777799 has 2 divisors, whose sum is σ = 54777800. Its totient is φ = 54777798.

The previous prime is 54777787. The next prime is 54777851. The reversal of 54777799 is 99777745.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54777799 - 2²³ = 46389191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54777719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27388899 + 27388900.

It is an arithmetic number, because the mean of its divisors is an integer number (27388900).

Almost surely, 2^54777799 is an apocalyptic number.

54777799 is a deficient number, since it is larger than the sum of its proper divisors (1).

54777799 is an equidigital number, since it uses as much as digits as its factorization.

54777799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3889620, while the sum is 55.

The square root of 54777799 is about 7401.2025374259. The cubic root of 54777799 is about 379.7824216119.

The spelling of 54777799 in words is "fifty-four million, seven hundred seventy-seven thousand, seven hundred ninety-nine".