256050309 has 16 divisors (see below), whose sum is σ = 353617920. Its totient is φ = 164606400.

The previous prime is 256050307. The next prime is 256050401. The reversal of 256050309 is 903050652.

It is not a de Polignac number, because 256050309 - 2¹ = 256050307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256050307) 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 in 15 ways as a sum of consecutive naturals, for example, 98859 + ... + 101415.

It is an arithmetic number, because the mean of its divisors is an integer number (22101120).

Almost surely, 2^256050309 is an apocalyptic number.

256050309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

256050309 is a deficient number, since it is larger than the sum of its proper divisors (97567611).

256050309 is a wasteful number, since it uses less digits than its factorization.

256050309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 256050309 is about 16001.5720790177. The cubic root of 256050309 is about 635.0020121043.

The spelling of 256050309 in words is "two hundred fifty-six million, fifty thousand, three hundred nine".