45728777 has 2 divisors, whose sum is σ = 45728778. Its totient is φ = 45728776.

The previous prime is 45728747. The next prime is 45728779. The reversal of 45728777 is 77782754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45549001 + 179776 = 6749^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 45728777 - 2⁶ = 45728713 is a prime.

It is a super-2 number, since 2×45728777² = 4182242091831458, which contains 22 as substring.

Together with 45728779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45728779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22864388 + 22864389.

It is an arithmetic number, because the mean of its divisors is an integer number (22864389).

Almost surely, 2^45728777 is an apocalyptic number.

It is an amenable number.

45728777 is a deficient number, since it is larger than the sum of its proper divisors (1).

45728777 is an equidigital number, since it uses as much as digits as its factorization.

45728777 is an odious number, because the sum of its binary digits is odd.

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

The square root of 45728777 is about 6762.3055979451. The cubic root of 45728777 is about 357.5991919974.

The spelling of 45728777 in words is "forty-five million, seven hundred twenty-eight thousand, seven hundred seventy-seven".