2551231201 has 4 divisors (see below), whose sum is σ = 2551441600.
Its totient is φ = 2551020804.
The previous prime is 2551231187. The next prime is 2551231223. The reversal of 2551231201 is 1021321552.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 2551231201 - 25 = 2551231169 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2551231301) 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, 85821 + ... + 111658.
It is an arithmetic number, because the mean of its divisors is an integer number (637860400).
Almost surely, 22551231201 is an apocalyptic number.
It is an amenable number.
2551231201 is a deficient number, since it is larger than the sum of its proper divisors (210399).
2551231201 is a wasteful number, since it uses less digits than its factorization.
2551231201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 210398.
The product of its (nonzero) digits is 600, while the sum is 22.
The square root of 2551231201 is about 50509.7139271249.
The cubic root of 2551231201 is about 1366.4170502339.
Adding to 2551231201 its reverse (1021321552), we get a palindrome (3572552753).
The spelling of 2551231201 in words is "two billion, five hundred fifty-one million, two hundred thirty-one thousand, two hundred one".