256032001 has 3 divisors (see below), whose sum is σ = 256048003. Its totient is φ = 256016000.

The previous prime is 256031999. The next prime is 256032013. The reversal of 256032001 is 100230652.

It is a happy number.

The square root of 256032001 is 16001.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 217592001 + 38440000 = 14751^2 + 6200^2 .

It is not a de Polignac number, because 256032001 - 2¹ = 256031999 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 256032001.

It is not an unprimeable number, because it can be changed into a prime (256032701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8001 + ... + 24001.

Almost surely, 2^256032001 is an apocalyptic number.

256032001 is the 16001-st square number.

256032001 is the 8001-st centered octagonal number.

It is an amenable number.

256032001 is a deficient number, since it is larger than the sum of its proper divisors (16002).

256032001 is an frugal number, since it uses more digits than its factorization.

256032001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32002 (or 16001 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The cubic root of 256032001 is about 634.9868771959.

Adding to 256032001 its reverse (100230652), we get a palindrome (356262653).

The spelling of 256032001 in words is "two hundred fifty-six million, thirty-two thousand, one".