257455332722051 has 2 divisors, whose sum is σ = 257455332722052. Its totient is φ = 257455332722050.

The previous prime is 257455332721933. The next prime is 257455332722087. The reversal of 257455332722051 is 150227233554752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257455332722051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257455332721984 and 257455332722002.

It is not a weakly prime, because it can be changed into another prime (257455332782051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128727666361025 + 128727666361026.

It is an arithmetic number, because the mean of its divisors is an integer number (128727666361026).

Almost surely, 2^{257455332722051} is an apocalyptic number.

257455332722051 is a deficient number, since it is larger than the sum of its proper divisors (1).

257455332722051 is an equidigital number, since it uses as much as digits as its factorization.

257455332722051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640000, while the sum is 53.

The spelling of 257455332722051 in words is "two hundred fifty-seven trillion, four hundred fifty-five billion, three hundred thirty-two million, seven hundred twenty-two thousand, fifty-one".