255647057 has 2 divisors, whose sum is σ = 255647058. Its totient is φ = 255647056.

The previous prime is 255647027. The next prime is 255647099. The reversal of 255647057 is 750746552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156525121 + 99121936 = 12511^2 + 9956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255647057 is a prime.

It is a super-2 number, since 2×255647057² = 130710835505522498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255647027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127823528 + 127823529.

It is an arithmetic number, because the mean of its divisors is an integer number (127823529).

Almost surely, 2^255647057 is an apocalyptic number.

It is an amenable number.

255647057 is a deficient number, since it is larger than the sum of its proper divisors (1).

255647057 is an equidigital number, since it uses as much as digits as its factorization.

255647057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 41.

The square root of 255647057 is about 15988.9667270903. The cubic root of 255647057 is about 634.6684834115.

The spelling of 255647057 in words is "two hundred fifty-five million, six hundred forty-seven thousand, fifty-seven".