427545757 has 2 divisors, whose sum is σ = 427545758. Its totient is φ = 427545756.

The previous prime is 427545737. The next prime is 427545763. The reversal of 427545757 is 757545724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408282436 + 19263321 = 20206^2 + 4389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427545757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427545737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213772878 + 213772879.

It is an arithmetic number, because the mean of its divisors is an integer number (213772879).

Almost surely, 2^427545757 is an apocalyptic number.

It is an amenable number.

427545757 is a deficient number, since it is larger than the sum of its proper divisors (1).

427545757 is an equidigital number, since it uses as much as digits as its factorization.

427545757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1372000, while the sum is 46.

The square root of 427545757 is about 20677.1796190873. The cubic root of 427545757 is about 753.3455032144.

The spelling of 427545757 in words is "four hundred twenty-seven million, five hundred forty-five thousand, seven hundred fifty-seven".