257675461 has 2 divisors, whose sum is σ = 257675462. Its totient is φ = 257675460.

The previous prime is 257675459. The next prime is 257675497. The reversal of 257675461 is 164576752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145950561 + 111724900 = 12081^2 + 10570^2 .

It is a cyclic number.

It is not a de Polignac number, because 257675461 - 2¹ = 257675459 is a prime.

Together with 257675459, 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 (257675161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128837730 + 128837731.

It is an arithmetic number, because the mean of its divisors is an integer number (128837731).

Almost surely, 2^257675461 is an apocalyptic number.

It is an amenable number.

257675461 is a deficient number, since it is larger than the sum of its proper divisors (1).

257675461 is an equidigital number, since it uses as much as digits as its factorization.

257675461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 257675461 is about 16052.2727674308. The cubic root of 257675461 is about 636.3426329438.

The spelling of 257675461 in words is "two hundred fifty-seven million, six hundred seventy-five thousand, four hundred sixty-one".