256200101 has 4 divisors (see below), whose sum is σ = 256239852. Its totient is φ = 256160352.

The previous prime is 256200083. The next prime is 256200121. The reversal of 256200101 is 101002652.

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

It can be written as a sum of positive squares in 2 ways, for example, as 118701025 + 137499076 = 10895^2 + 11726^2 .

It is a cyclic number.

It is not a de Polignac number, because 256200101 - 2¹⁴ = 256183717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256200121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7736 + ... + 23921.

It is an arithmetic number, because the mean of its divisors is an integer number (64059963).

Almost surely, 2^256200101 is an apocalyptic number.

It is an amenable number.

256200101 is a deficient number, since it is larger than the sum of its proper divisors (39751).

256200101 is an equidigital number, since it uses as much as digits as its factorization.

256200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39750.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 256200101 is about 16006.2519347910. The cubic root of 256200101 is about 635.1258154816.

Adding to 256200101 its reverse (101002652), we get a palindrome (357202753).

The spelling of 256200101 in words is "two hundred fifty-six million, two hundred thousand, one hundred one".