256550601 has 8 divisors (see below), whose sum is σ = 343787200. Its totient is φ = 170173872.

The previous prime is 256550527. The next prime is 256550611. The reversal of 256550601 is 106055652.

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

It is not a de Polignac number, because 256550601 - 2²¹ = 254453449 is a prime.

It is a super-2 number, since 2×256550601² = 131636421746922402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256550611) 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, 214270 + ... + 215463.

It is an arithmetic number, because the mean of its divisors is an integer number (42973400).

Almost surely, 2^256550601 is an apocalyptic number.

It is an amenable number.

256550601 is a deficient number, since it is larger than the sum of its proper divisors (87236599).

256550601 is a wasteful number, since it uses less digits than its factorization.

256550601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429935.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 256550601 is about 16017.1970394323. The cubic root of 256550601 is about 635.4153159650.

The spelling of 256550601 in words is "two hundred fifty-six million, five hundred fifty thousand, six hundred one".