256048957 has 8 divisors (see below), whose sum is σ = 258746400. Its totient is φ = 253358064.

The previous prime is 256048889. The next prime is 256048973. The reversal of 256048957 is 759840652.

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 256048957 - 2⁷ = 256048829 is a prime.

It is a super-2 number, since 2×256048957² = 131122136761575698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256048987) 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 in 7 ways as a sum of consecutive naturals, for example, 128394 + ... + 130372.

It is an arithmetic number, because the mean of its divisors is an integer number (32343300).

Almost surely, 2^256048957 is an apocalyptic number.

It is an amenable number.

256048957 is a deficient number, since it is larger than the sum of its proper divisors (2697443).

256048957 is a wasteful number, since it uses less digits than its factorization.

256048957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 256048957 is about 16001.5298331128. The cubic root of 256048957 is about 635.0008944539. Note that the first 3 decimals are identical.

The spelling of 256048957 in words is "two hundred fifty-six million, forty-eight thousand, nine hundred fifty-seven".