2550121001 has 4 divisors (see below), whose sum is σ = 2559327492. Its totient is φ = 2540914512.

The previous prime is 2550120997. The next prime is 2550121033. The reversal of 2550121001 is 1001210552.

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 1052353600 + 1497767401 = 32440^2 + 38701^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550121001 - 2² = 2550120997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2550121051) 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 3 ways as a sum of consecutive naturals, for example, 4602830 + ... + 4603383.

It is an arithmetic number, because the mean of its divisors is an integer number (639831873).

Almost surely, 2^2550121001 is an apocalyptic number.

It is an amenable number.

2550121001 is a deficient number, since it is larger than the sum of its proper divisors (9206491).

2550121001 is an equidigital number, since it uses as much as digits as its factorization.

2550121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9206490.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 2550121001 is about 50498.7227660265. The cubic root of 2550121001 is about 1366.2188170163.

Adding to 2550121001 its reverse (1001210552), we get a palindrome (3551331553).

The spelling of 2550121001 in words is "two billion, five hundred fifty million, one hundred twenty-one thousand, one".