428575757 has 2 divisors, whose sum is σ = 428575758. Its totient is φ = 428575756.

The previous prime is 428575739. The next prime is 428575759. The reversal of 428575757 is 757575824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423495241 + 5080516 = 20579^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 428575757 - 2¹⁶ = 428510221 is a prime.

Together with 428575759, 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 (428575759) 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, 214287878 + 214287879.

It is an arithmetic number, because the mean of its divisors is an integer number (214287879).

Almost surely, 2^428575757 is an apocalyptic number.

It is an amenable number.

428575757 is a deficient number, since it is larger than the sum of its proper divisors (1).

428575757 is an equidigital number, since it uses as much as digits as its factorization.

428575757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2744000, while the sum is 50.

The square root of 428575757 is about 20702.0713214886. The cubic root of 428575757 is about 753.9499793266.

The spelling of 428575757 in words is "four hundred twenty-eight million, five hundred seventy-five thousand, seven hundred fifty-seven".