2111452251 has 4 divisors (see below), whose sum is σ = 2815269672. Its totient is φ = 1407634832.

The previous prime is 2111452201. The next prime is 2111452283. The reversal of 2111452251 is 1522541112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111452251 - 2⁹ = 2111451739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111452201) 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, 351908706 + ... + 351908711.

It is an arithmetic number, because the mean of its divisors is an integer number (703817418).

Almost surely, 2^2111452251 is an apocalyptic number.

2111452251 is a deficient number, since it is larger than the sum of its proper divisors (703817421).

2111452251 is an equidigital number, since it uses as much as digits as its factorization.

2111452251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703817420.

The product of its digits is 800, while the sum is 24.

The square root of 2111452251 is about 45950.5413569851. The cubic root of 2111452251 is about 1282.9028055065.

Adding to 2111452251 its reverse (1522541112), we get a palindrome (3633993363).

The spelling of 2111452251 in words is "two billion, one hundred eleven million, four hundred fifty-two thousand, two hundred fifty-one".