4000002251 has 6 divisors (see below), whose sum is σ = 4653063900. Its totient is φ = 3428573316.

The previous prime is 4000002241. The next prime is 4000002263. The reversal of 4000002251 is 1522000004.

It is not a de Polignac number, because 4000002251 - 2¹⁰ = 4000001227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000002221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40816301 + ... + 40816398.

It is an arithmetic number, because the mean of its divisors is an integer number (775510650).

Almost surely, 2^4000002251 is an apocalyptic number.

4000002251 is a deficient number, since it is larger than the sum of its proper divisors (653061649).

4000002251 is an equidigital number, since it uses as much as digits as its factorization.

4000002251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81632713 (or 81632706 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4000002251 is about 63245.5709990826. The cubic root of 4000002251 is about 1587.4013497381.

Adding to 4000002251 its reverse (1522000004), we get a palindrome (5522002255).

The spelling of 4000002251 in words is "four billion, two thousand, two hundred fifty-one".