257293006 has 4 divisors (see below), whose sum is σ = 385939512. Its totient is φ = 128646502.

The previous prime is 257292979. The next prime is 257293007. The reversal of 257293006 is 600392752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257293007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64323250 + ... + 64323253.

It is an arithmetic number, because the mean of its divisors is an integer number (96484878).

Almost surely, 2^257293006 is an apocalyptic number.

257293006 is a deficient number, since it is larger than the sum of its proper divisors (128646506).

257293006 is a wasteful number, since it uses less digits than its factorization.

257293006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128646505.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 257293006 is about 16040.3555446879. The cubic root of 257293006 is about 636.0276463728.

The spelling of 257293006 in words is "two hundred fifty-seven million, two hundred ninety-three thousand, six".