255120001 has 4 divisors (see below), whose sum is σ = 255158100. Its totient is φ = 255081904.

The previous prime is 255119981. The next prime is 255120007. The reversal of 255120001 is 100021552.

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 184307776 + 70812225 = 13576^2 + 8415^2 .

It is a cyclic number.

It is not a de Polignac number, because 255120001 - 2⁹ = 255119489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255120007) 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 3 ways as a sum of consecutive naturals, for example, 6046 + ... + 23383.

It is an arithmetic number, because the mean of its divisors is an integer number (63789525).

Almost surely, 2^255120001 is an apocalyptic number.

It is an amenable number.

255120001 is a deficient number, since it is larger than the sum of its proper divisors (38099).

255120001 is an equidigital number, since it uses as much as digits as its factorization.

255120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38098.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 255120001 is about 15972.4763577850. The cubic root of 255120001 is about 634.2320275436.

Adding to 255120001 its reverse (100021552), we get a palindrome (355141553).

The spelling of 255120001 in words is "two hundred fifty-five million, one hundred twenty thousand, one".