257453530 has 16 divisors (see below), whose sum is σ = 470334240. Its totient is φ = 101444112.

The previous prime is 257453519. The next prime is 257453569. The reversal of 257453530 is 35354752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191460 + ... + 192799.

It is an arithmetic number, because the mean of its divisors is an integer number (29395890).

Almost surely, 2^257453530 is an apocalyptic number.

257453530 is a deficient number, since it is larger than the sum of its proper divisors (212880710).

257453530 is a wasteful number, since it uses less digits than its factorization.

257453530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384333.

The product of its (nonzero) digits is 63000, while the sum is 34.

The square root of 257453530 is about 16045.3585188989. The cubic root of 257453530 is about 636.1598905123.

The spelling of 257453530 in words is "two hundred fifty-seven million, four hundred fifty-three thousand, five hundred thirty".