54728777 has 2 divisors, whose sum is σ = 54728778. Its totient is φ = 54728776.

The previous prime is 54728761. The next prime is 54728783. The reversal of 54728777 is 77782745.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 10426441 = 6656^2 + 3229^2 .

It is a cyclic number.

It is not a de Polignac number, because 54728777 - 2⁴ = 54728761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54728747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27364388 + 27364389.

It is an arithmetic number, because the mean of its divisors is an integer number (27364389).

Almost surely, 2^54728777 is an apocalyptic number.

It is an amenable number.

54728777 is a deficient number, since it is larger than the sum of its proper divisors (1).

54728777 is an equidigital number, since it uses as much as digits as its factorization.

54728777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768320, while the sum is 47.

The square root of 54728777 is about 7397.8900370308. The cubic root of 54728777 is about 379.6690955882.

The spelling of 54728777 in words is "fifty-four million, seven hundred twenty-eight thousand, seven hundred seventy-seven".