257461093 has 2 divisors, whose sum is σ = 257461094. Its totient is φ = 257461092.

The previous prime is 257461091. The next prime is 257461109. The reversal of 257461093 is 390164752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203262049 + 54199044 = 14257^2 + 7362^2 .

It is a cyclic number.

It is not a de Polignac number, because 257461093 - 2¹ = 257461091 is a prime.

Together with 257461091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257461091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128730546 + 128730547.

It is an arithmetic number, because the mean of its divisors is an integer number (128730547).

Almost surely, 2^257461093 is an apocalyptic number.

It is an amenable number.

257461093 is a deficient number, since it is larger than the sum of its proper divisors (1).

257461093 is an equidigital number, since it uses as much as digits as its factorization.

257461093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 257461093 is about 16045.5941927995. The cubic root of 257461093 is about 636.1661197661.

The spelling of 257461093 in words is "two hundred fifty-seven million, four hundred sixty-one thousand, ninety-three".