2611212251 has 4 divisors (see below), whose sum is σ = 2611337400. Its totient is φ = 2611087104.

The previous prime is 2611212217. The next prime is 2611212293. The reversal of 2611212251 is 1522121162.

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 is a cyclic number.

It is not a de Polignac number, because 2611212251 - 2⁶ = 2611212187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2611215251) 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, 22886 + ... + 75803.

It is an arithmetic number, because the mean of its divisors is an integer number (652834350).

Almost surely, 2^2611212251 is an apocalyptic number.

2611212251 is a deficient number, since it is larger than the sum of its proper divisors (125149).

2611212251 is an equidigital number, since it uses as much as digits as its factorization.

2611212251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125148.

The product of its digits is 480, while the sum is 23.

The square root of 2611212251 is about 51100.0220254356. The cubic root of 2611212251 is about 1377.0426501371.

The spelling of 2611212251 in words is "two billion, six hundred eleven million, two hundred twelve thousand, two hundred fifty-one".