257474733 has 8 divisors (see below), whose sum is σ = 343375296. Its totient is φ = 171612000.

The previous prime is 257474713. The next prime is 257474743. The reversal of 257474733 is 337474752.

It is a happy number.

257474733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257474733 - 2⁹ = 257474221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257474713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17008 + ... + 28358.

It is an arithmetic number, because the mean of its divisors is an integer number (42921912).

Almost surely, 2^257474733 is an apocalyptic number.

It is an amenable number.

257474733 is a deficient number, since it is larger than the sum of its proper divisors (85900563).

257474733 is a wasteful number, since it uses less digits than its factorization.

257474733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18915.

The product of its digits is 493920, while the sum is 42.

The square root of 257474733 is about 16046.0192259638. The cubic root of 257474733 is about 636.1773540236.

The spelling of 257474733 in words is "two hundred fifty-seven million, four hundred seventy-four thousand, seven hundred thirty-three".