2151116051 has 4 divisors (see below), whose sum is σ = 2458418352. Its totient is φ = 1843813752.

The previous prime is 2151116041. The next prime is 2151116083. The reversal of 2151116051 is 1506111512.

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 2151116051 - 2¹⁰ = 2151115027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151116041) 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, 153651140 + ... + 153651153.

It is an arithmetic number, because the mean of its divisors is an integer number (614604588).

Almost surely, 2^2151116051 is an apocalyptic number.

2151116051 is a deficient number, since it is larger than the sum of its proper divisors (307302301).

2151116051 is an equidigital number, since it uses as much as digits as its factorization.

2151116051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307302300.

The product of its (nonzero) digits is 300, while the sum is 23.

The square root of 2151116051 is about 46380.1256035384. The cubic root of 2151116051 is about 1290.8861669420.

Adding to 2151116051 its reverse (1506111512), we get a palindrome (3657227563).

The spelling of 2151116051 in words is "two billion, one hundred fifty-one million, one hundred sixteen thousand, fifty-one".