257094433 has 2 divisors, whose sum is σ = 257094434. Its totient is φ = 257094432.

The previous prime is 257094403. The next prime is 257094449. The reversal of 257094433 is 334490752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183683809 + 73410624 = 13553^2 + 8568^2 .

It is a cyclic number.

It is not a de Polignac number, because 257094433 - 2¹³ = 257086241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257094392 and 257094401.

It is not a weakly prime, because it can be changed into another prime (257094403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128547216 + 128547217.

It is an arithmetic number, because the mean of its divisors is an integer number (128547217).

Almost surely, 2^257094433 is an apocalyptic number.

It is an amenable number.

257094433 is a deficient number, since it is larger than the sum of its proper divisors (1).

257094433 is an equidigital number, since it uses as much as digits as its factorization.

257094433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 257094433 is about 16034.1645557229. The cubic root of 257094433 is about 635.8639802799.

The spelling of 257094433 in words is "two hundred fifty-seven million, ninety-four thousand, four hundred thirty-three".