257370047 has 8 divisors (see below), whose sum is σ = 281176272. Its totient is φ = 233632000.

The previous prime is 257370031. The next prime is 257370049. The reversal of 257370047 is 740073752.

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

It is a cyclic number.

It is not a de Polignac number, because 257370047 - 2⁴ = 257370031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257369989 and 257370016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257370049) 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, 8978 + ... + 24399.

It is an arithmetic number, because the mean of its divisors is an integer number (35147034).

Almost surely, 2^257370047 is an apocalyptic number.

257370047 is a deficient number, since it is larger than the sum of its proper divisors (23806225).

257370047 is a wasteful number, since it uses less digits than its factorization.

257370047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34089.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 257370047 is about 16042.7568391471. The cubic root of 257370047 is about 636.0911217555.

The spelling of 257370047 in words is "two hundred fifty-seven million, three hundred seventy thousand, forty-seven".