2115060251 has 4 divisors (see below), whose sum is σ = 2144849904. Its totient is φ = 2085270600.

The previous prime is 2115060239. The next prime is 2115060263. The reversal of 2115060251 is 1520605112.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2115060239) and next prime (2115060263).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115060251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115060551) 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, 14894720 + ... + 14894861.

It is an arithmetic number, because the mean of its divisors is an integer number (536212476).

Almost surely, 2^2115060251 is an apocalyptic number.

2115060251 is a deficient number, since it is larger than the sum of its proper divisors (29789653).

2115060251 is an equidigital number, since it uses as much as digits as its factorization.

2115060251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29789652.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2115060251 is about 45989.7842025813. The cubic root of 2115060251 is about 1283.6331210735.

Adding to 2115060251 its reverse (1520605112), we get a palindrome (3635665363).

The spelling of 2115060251 in words is "two billion, one hundred fifteen million, sixty thousand, two hundred fifty-one".