54428779 has 2 divisors, whose sum is σ = 54428780. Its totient is φ = 54428778.

The previous prime is 54428761. The next prime is 54428783. The reversal of 54428779 is 97782445.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54428779 is a prime.

It is not a weakly prime, because it can be changed into another prime (54428719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27214389 + 27214390.

It is an arithmetic number, because the mean of its divisors is an integer number (27214390).

Almost surely, 2^54428779 is an apocalyptic number.

54428779 is a deficient number, since it is larger than the sum of its proper divisors (1).

54428779 is an equidigital number, since it uses as much as digits as its factorization.

54428779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 54428779 is about 7377.5862583910. The cubic root of 54428779 is about 378.9741003319.

The spelling of 54428779 in words is "fifty-four million, four hundred twenty-eight thousand, seven hundred seventy-nine".