256350173 has 8 divisors (see below), whose sum is σ = 262743168. Its totient is φ = 249996384.

The previous prime is 256350161. The next prime is 256350187. The reversal of 256350173 is 371053652.

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

It is a de Polignac number, because none of the positive numbers 2^k-256350173 is a prime.

It is a super-2 number, since 2×256350173² = 131430822394259858, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256350113) 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, 3665 + ... + 22937.

It is an arithmetic number, because the mean of its divisors is an integer number (32842896).

Almost surely, 2^256350173 is an apocalyptic number.

It is an amenable number.

256350173 is a deficient number, since it is larger than the sum of its proper divisors (6392995).

256350173 is a wasteful number, since it uses less digits than its factorization.

256350173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19603.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 256350173 is about 16010.9391667072. The cubic root of 256350173 is about 635.2498018976.

The spelling of 256350173 in words is "two hundred fifty-six million, three hundred fifty thousand, one hundred seventy-three".