2115514251 has 12 divisors (see below), whose sum is σ = 3056482728. Its totient is φ = 1410001344.

The previous prime is 2115514249. The next prime is 2115514277. The reversal of 2115514251 is 1524155112.

It is a happy number.

2115514251 is a `hidden beast` number, since 21 + 1 + 551 + 42 + 51 = 666.

It is not a de Polignac number, because 2115514251 - 2¹ = 2115514249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115514201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14131 + ... + 66563.

It is an arithmetic number, because the mean of its divisors is an integer number (254706894).

Almost surely, 2^2115514251 is an apocalyptic number.

2115514251 is a deficient number, since it is larger than the sum of its proper divisors (940968477).

2115514251 is a wasteful number, since it uses less digits than its factorization.

2115514251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56922 (or 56919 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 2115514251 is about 45994.7198165181. The cubic root of 2115514251 is about 1283.7249589213.

Adding to 2115514251 its reverse (1524155112), we get a palindrome (3639669363).

The spelling of 2115514251 in words is "two billion, one hundred fifteen million, five hundred fourteen thousand, two hundred fifty-one".