2115405151 has 4 divisors (see below), whose sum is σ = 2207379312. Its totient is φ = 2023430992.

The previous prime is 2115405139. The next prime is 2115405163. The reversal of 2115405151 is 1515045112.

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 (2115405139) and next prime (2115405163).

It is a cyclic number.

It is not a de Polignac number, because 2115405151 - 2²⁹ = 1578534239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115405121) 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, 45987046 + ... + 45987091.

It is an arithmetic number, because the mean of its divisors is an integer number (551844828).

Almost surely, 2^2115405151 is an apocalyptic number.

2115405151 is a deficient number, since it is larger than the sum of its proper divisors (91974161).

2115405151 is an equidigital number, since it uses as much as digits as its factorization.

2115405151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91974160.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 2115405151 is about 45993.5337955239. The cubic root of 2115405151 is about 1283.7028907173.

The spelling of 2115405151 in words is "two billion, one hundred fifteen million, four hundred five thousand, one hundred fifty-one".