256053346 has 4 divisors (see below), whose sum is σ = 384080022. Its totient is φ = 128026672.

The previous prime is 256053313. The next prime is 256053349. The reversal of 256053346 is 643350652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170694225 + 85359121 = 13065^2 + 9239^2 .

It is not an unprimeable number, because it can be changed into a prime (256053349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64013335 + ... + 64013338.

Almost surely, 2^256053346 is an apocalyptic number.

256053346 is a deficient number, since it is larger than the sum of its proper divisors (128026676).

256053346 is a wasteful number, since it uses less digits than its factorization.

256053346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128026675.

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 256053346 is about 16001.6669756623. Note that the first 3 decimals coincide. The cubic root of 256053346 is about 635.0045226702.

The spelling of 256053346 in words is "two hundred fifty-six million, fifty-three thousand, three hundred forty-six".