257745006 has 12 divisors (see below), whose sum is σ = 558447552. Its totient is φ = 85914996.

The previous prime is 257745001. The next prime is 257745017. The reversal of 257745006 is 600547752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257745001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7159566 + ... + 7159601.

It is an arithmetic number, because the mean of its divisors is an integer number (46537296).

Almost surely, 2^257745006 is an apocalyptic number.

257745006 is an abundant number, since it is smaller than the sum of its proper divisors (300702546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257745006 is a wasteful number, since it uses less digits than its factorization.

257745006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14319175 (or 14319172 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 257745006 is about 16054.4388254464. The cubic root of 257745006 is about 636.3998760970.

The spelling of 257745006 in words is "two hundred fifty-seven million, seven hundred forty-five thousand, six".